ResetsFont docs.

[lyx.git] / lib / doc / Tutorial.lyx

#LyX 1.6.8svn created this file. For more info see http://www.lyx.org/
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\pdf_title "The LyX Tutorial"
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\begin_body

\begin_layout Title
The LyX Tutorial
\end_layout

\begin_layout Author
by the LyX Team
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
If you have comments or error corrections, please send them to the LyX Documenta
tion mailing list, 
\family typewriter

\begin_inset CommandInset href
LatexCommand href
target "lyx-docs@lists.lyx.org"
type "mailto:"

\end_inset


\family default
.
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset CommandInset toc
LatexCommand tableofcontents

\end_inset


\end_layout

\begin_layout Chapter
Introduction
\end_layout

\begin_layout Section
Welcome to LyX!
\end_layout

\begin_layout Standard
This file is designed for all of you who have never heard of LaTeX, or do
 not know it very well.
 Now, do not panic - you will not need to learn LaTeX to use LyX.
 That is, after all, the whole point of LyX: to provide an almost-WYSIWYG
 interface to LaTeX.
 There are some things you will need to learn, however, in order to use
 LyX effectively.
\end_layout

\begin_layout Standard
Some of you probably found your way to this document because you tried to
 put two spaces after a 
\begin_inset Quotes eld
\end_inset

.
\begin_inset Quotes erd
\end_inset

 or tried to put three blank lines between paragraphs.
 You found out you could not and in fact, you will find out that most of
 the little tricks you are accustomed to use in other word processors will
 not work in LyX.
 That is because most word processors you have  used before allow you to
 manually enter all spacings, font changes, and so on.
 So you end up not only writing a document but typesetting it, too.
 LyX does the typesetting for you, in a consistent fashion, letting you
 focus on the important things, like the content of your writing.
\end_layout

\begin_layout Standard
So read on to learn more about LyX.
 Reading this tutorial is definitely worth the time.
\end_layout

\begin_layout Section
What the Tutorial 
\emph on
is
\emph default
 and what it 
\emph on
is not
\end_layout

\begin_layout Standard
Before we get started with this section, we want to make a quick note of
 something.
 The 
\emph on
Tutorial
\emph default
 uses the notation outlined in the 
\emph on
Introduction
\emph default
 manual.
 If you came to this manual first, please read the 
\emph on
Introduction
\emph default
 before you continue with the 
\emph on
Tutorial
\emph default
.
\end_layout

\begin_layout Standard
Now that you know which fonts mean what, we want to talk a bit about what
 this 
\emph on
Tutorial
\emph default
 is for.
\end_layout

\begin_layout Subsection
Getting the most out of the Tutorial
\end_layout

\begin_layout Standard
This tutorial consists of examples and exercises.
 To get the most out of this document, you should read through the document,
 typing all the little things we are telling you to type and trying out
 all of the exercises to see if you get them right.
 For convenience, you might want to print out the PDF version of this document.
\end_layout

\begin_layout Standard
If you are familiar with LaTeX, you will probably be able to read the 
\emph on
Tutorial
\emph default
 somewhat faster, since many LyX ideas are just LaTeX ideas in disguise.
 However, LyX has features you will want to learn about.
 Even if you do not feel like reading the rest of the 
\emph on
Tutorial
\emph default
, you should definitely check out Section
\begin_inset space ~
\end_inset


\begin_inset CommandInset ref
LatexCommand ref
reference "sec:latexusers"

\end_inset

, which is specifically written for experienced LaTeX users.
\end_layout

\begin_layout Subsection
What you 
\emph on
will not
\emph default
 find
\end_layout

\begin_layout Itemize
Detailed explanations of all of LyX's features.
\end_layout

\begin_deeper
\begin_layout Standard
Look in the 
\emph on
User's Guide
\emph default
 when you need this.
\end_layout

\end_deeper
\begin_layout Itemize
Detailed explanations of LaTeX.
\end_layout

\begin_deeper
\begin_layout Standard
Unnecessary.
 If you want to learn some of the neat tricks you can do with LaTeX in LyX,
 you can have a look at the 
\emph on
Embedded
\begin_inset space ~
\end_inset

Objects
\emph default
 manual.
\end_layout

\end_deeper
\begin_layout Standard
It is time to move onwards, time for your first document \SpecialChar \ldots{}

\end_layout

\begin_layout Chapter
Getting started with LyX
\end_layout

\begin_layout Section
Your first LyX document
\end_layout

\begin_layout Standard
OK\SpecialChar \@.
 You are ready to start writing.
 Before you do, there are a few things we need to mention, which will hopefully
 make the Tutorial more instructive and useful.
 
\end_layout

\begin_layout Standard
Because there is information we cannot give you in the Tutorial, the 
\emph on
first
\emph default
 
\series medium
thing that you need to do is find the
\series default
 other 
\series medium
help files.
 This is very simple:
\series default
 Start up LyX, Choose the 
\emph on
User's Guide
\emph default
 from the 
\family sans
Help
\family default
 menu.
 You may want to load the 
\emph on
Tutorial
\emph default
 as well (if you are not reading it within LyX already).
 This way, you can read them while you are writing your own file.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
They can also serve as good examples of how to use the many features of
 LyX.
\end_layout

\end_inset

 Note that once you have got more than one document open, you can use the
 
\family sans
View
\family default
 menu or the document tabs to switch between them.
\end_layout

\begin_layout Standard
In this Tutorial, we are going to assume that you have a fully working version
 of LyX, as well as a LaTeX-distribution, a DVI-, and a PDF-viewer.
 This should be the case on all major Linux- and BSD-distributions, as well
 as on Windows, where this is setup by the LyX installers.
\end_layout

\begin_layout Standard
Finally, we have written a file called 
\family typewriter
example_raw.lyx
\family default
 to let you practice your LyX skills.
 Imagine that it was typed by someone who did not know about any of LyX's
 great features.
 As you learn new LyX functions, we will suggest that you fix those parts
 of 
\family typewriter
example_raw.lyx
\family default
.
 It also contains `subtle' hints about how to fix things.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
The hints are located in yellow 
\begin_inset Quotes eld
\end_inset

Notes
\begin_inset Quotes erd
\end_inset

.
 Access the text in a note by clicking on it.
\end_layout

\end_inset

 If you want to cheat, or check what you have done, there is also a file
 called 
\family typewriter
example_lyxified.lyx
\family default
 which contains the same text written and typeset by a LyX master.
\end_layout

\begin_layout Standard
The example files can be found in the 
\family typewriter
examples
\family default
 directory of LyX's installation folder.
 Open the raw document, and use 
\family sans
File\SpecialChar \menuseparator
Save
\begin_inset space ~
\end_inset

As
\family default
 to save a copy in your own directory for you to work on.
 As you fix parts of the raw document, check to see how those changes affect
 the DVI output.
\end_layout

\begin_layout Standard
By the way, the 
\family typewriter
examples
\family default
 directory contains lots of other examples files.
 They will show you how to do various fancy things with LyX.
 After you have read the Tutorial, or when you are confused about how to
 do something fancy in LyX, take a look at these files.
\end_layout

\begin_layout Subsection
Typing, Viewing, and Exporting
\end_layout

\begin_layout Itemize
Open a new file with 
\family sans
File\SpecialChar \menuseparator
New
\end_layout

\begin_layout Itemize
Type a sentence like: 
\family typewriter
This is my first LyX document!
\end_layout

\begin_layout Itemize
Save your document with 
\family sans
File\SpecialChar \menuseparator
Save
\begin_inset space ~
\end_inset

As\SpecialChar \@.

\end_layout

\begin_layout Itemize
Run LaTeX to create a DVI file, with 
\family sans
View\SpecialChar \menuseparator
DVI
\family default
 or the toolbar button 
\begin_inset Graphics
        filename ../images/buffer-view_dvi.png
        scale 75

\end_inset

.
 LyX will open a DVI-viewer program displaying your document as it will
 look when printed.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
You can save time by leaving the DVI-viewer running in the background.
 Then, you can use 
\family sans
View\SpecialChar \menuseparator
Update\SpecialChar \menuseparator
DVI
\family default
 or the toolbar button 
\begin_inset Graphics
        filename ../images/buffer-update_dvi.png
        scale 75

\end_inset

 and just click on the DVI-viewer window (or unminimize it) after LaTeX
 finishes running.
\end_layout

\end_inset


\end_layout

\begin_layout Itemize
Export the ready to print document with 
\family sans
File\SpecialChar \menuseparator
Export
\family default
 to a format you want
\family sans
.
\end_layout

\begin_layout Standard
Congratulations! You have written your first LyX document.
 All of the rest is just details, which are covered in the other manuals.
\end_layout

\begin_layout Subsection
Simple Operations
\end_layout

\begin_layout Standard
LyX can of course do most of the things you are used to do with a word processor.
 It will word-wrap and indent paragraphs automatically.
 Here is a quick description of how to do some simple actions.
\end_layout

\begin_layout Description
Undo LyX has multiple levels of undo, which means you can undo everything
 you have  done since your current editing session started, by selecting
 
\family sans
Edit\SpecialChar \menuseparator
Undo
\family default
 (toolbar button 
\begin_inset Graphics
        filename ../images/undo.png
        scale 75

\end_inset

) over and over again.
 If you undo too much, just select 
\family sans
Edit\SpecialChar \menuseparator
Redo
\family default
 (toolbar button 
\begin_inset Graphics
        filename ../images/redo.png
        scale 75

\end_inset

) to get it back.
 
\end_layout

\begin_deeper
\begin_layout Standard
Currently, undo is limited to 100 steps.
\end_layout

\end_deeper
\begin_layout Description
Cut/Paste/Copy Use 
\family sans
Edit\SpecialChar \menuseparator
Cut
\family default
 (toolbar button 
\begin_inset Graphics
        filename ../images/cut.png
        scale 75

\end_inset

), 
\family sans
Edit\SpecialChar \menuseparator
Copy
\family default
 (toolbar button 
\begin_inset Graphics
        filename ../images/copy.png
        scale 75

\end_inset

), and 
\family sans
Edit\SpecialChar \menuseparator
Paste
\family default
 (toolbar button 
\begin_inset Graphics
        filename ../images/paste.png
        scale 75

\end_inset

) to cut, copy, and paste.
 Or automatically paste selected text (including selections from other programs)
 with the 
\emph on
middle mouse button
\emph default
.
\end_layout

\begin_layout Description
Find/Replace Use 
\family sans
Edit\SpecialChar \menuseparator
Find
\begin_inset space ~
\end_inset

&
\begin_inset space ~
\end_inset

Replace
\family default
 (toolbar button 
\begin_inset Graphics
        filename ../images/dialog-show_findreplace.png
        scale 75

\end_inset

) to search.
 In the dialog, search with the 
\family sans
Find
\begin_inset space ~
\end_inset

Next
\family default
 button, and use the 
\family sans
Replace
\family default
 button to replace a word you have  found.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
Close the window when you are done or leave it open if you find it more
 convenient.
 Most dialog boxes in LyX can operate like this.
 Just be sure you have the right window focus when you are trying to type
 in the main LyX window or a LyX dialog.
\end_layout

\end_inset

 If you like, you can specify whether to make the search case-sensitive,
 or to search for only complete words; you can also search backwards through
 the document.
\end_layout

\begin_layout Description
Character
\begin_inset space ~
\end_inset

Formatting You can 
\emph on
emphasize
\emph default
 text (which will by default print characters in italics), set it in 
\series bold
bold face
\series default
, in 
\noun on
Noun Style
\noun default
 (usually small caps, used for people's names), or use your own formatting
 by using the 
\family sans
Edit\SpecialChar \menuseparator
Text
\begin_inset space ~
\end_inset

Style
\family default
 dialog (toolbar button 
\begin_inset Graphics
        filename ../images/dialog-show_character.png
        scale 75

\end_inset

).
\end_layout

\begin_layout Description
Toolbar There are buttons on the toolbar (just below the menus) which allow
 you to do some of the more popular functions, such as 
\family sans
Paste
\family default
 and 
\family sans
Print
\family default
.
\end_layout

\begin_layout Standard
Of course, you have not yet written enough to make most of these functions
 useful.
 As you write more, though, try undoing, pasting, etc.
\end_layout

\begin_layout Subsection
WYSIWYM: Whitespace in LyX
\end_layout

\begin_layout Standard
One of the hardest things for new users to get used to is the way that LyX
 handles whitespace.
 As many times as you hit 
\family sans
Return
\family default
, you will only get one blank line.
 As many times as you hit 
\family sans
Space
\family default
, you will only get one space.
 On a blank line, LyX will not let you type even one space.
 The 
\family sans
Tab
\family default
 key will not move you forward one tab stop; in fact there 
\emph on
are
\emph default
 no tab stops! There is no ruler at the top of the page to let you set tabs
 or margins, either.
\end_layout

\begin_layout Standard
Many word processors are based on the WYSIWYG principle: 
\begin_inset Quotes eld
\end_inset

What You See Is What You Get.
\begin_inset Quotes erd
\end_inset

 LyX, on the other hand, is based on the principle that 
\begin_inset Quotes eld
\end_inset

What You See Is What You 
\emph on
Mean
\emph default
.
\begin_inset Quotes erd
\end_inset

 You type what you mean, and LyX will take care of typesetting it for you,
 so that the output looks nice.
 A 
\family sans
Return
\family default
 grammatically separates paragraphs, and a 
\family sans
Space
\family default
 grammatically separates words, so there is no reason to have several of
 them in a row; a 
\family sans
Tab
\family default
 has no grammatical function at all, so LyX does not support it.
 Using LyX, you will spend more of your time worrying about the 
\emph on
content
\emph default
 of your document, and less time worrying about the 
\emph on
format.

\emph default
 See the 
\emph on
Introduction
\emph default
 for more information on the WYSIWYM concept.
\end_layout

\begin_layout Standard
LyX does have (many) ways to fine-tune the formatting of your document.
 After all, LyX might not typeset 
\emph on
exactly
\emph default
 what you mean.
 The 
\emph on
User's Guide
\emph default
 has information about all that.
 It includes horizontal fills and vertical space — which are more powerful
 and versatile than multiple spaces or blank lines — and ways to change
 font sizes, character styles, and paragraph alignments by hand.
 The idea, though, is that you can write your whole document, focusing on
 content, and just worry about that fine-tuning at the end.
 With standard word processors, you will be distracted by document formatting
 throughout the writing process.
\end_layout

\begin_layout Section
Environments
\end_layout

\begin_layout Standard
Different parts of a document have different purposes; we call these parts
 
\emph on
environments
\emph default
.
 Most of a document is made up of regular text.
 Section titles (chapter, subsection, etc.) let the reader know that a new
 topic or subtopic will be discussed.
 Certain types of documents have special environments.
 A journal article will have an abstract and a title.
 A letter will have neither of these, but will probably have an environment
 that gives the writer's address.
\end_layout

\begin_layout Standard
Environments are a major part of the 
\begin_inset Quotes eld
\end_inset

What You See Is What You Mean
\begin_inset Quotes erd
\end_inset

 philosophy of LyX.
 A given environment may require a certain font style, font size, indenting,
 line spacing, and more.
 This problem is aggravated, because the exact formatting for a given environmen
t may change: one journal may use boldface, 18 point, centered type for
 section titles while another uses italicized, 15 point, left justified
 type; different languages may have different standards for indenting; and
 bibliography formats can vary widely.
 LyX lets you avoid learning all the different formatting styles.
\end_layout

\begin_layout Standard
The 
\family sans
Environment
\family default
 choice box is located on the left end of the toolbar and looks like this:
 
\begin_inset Graphics
        filename clipart/ToolbarEnvBox.png
        scale 75
        clip

\end_inset

.
 It indicates in which environment you are currently writing.
 While you were writing your first document, it said 
\begin_inset Quotes eld
\end_inset

Standard,
\begin_inset Quotes erd
\end_inset

 which is the default environment for text.
 Now you will put a number of environments in your new document so that
 you can see how they work.
\end_layout

\begin_layout Subsection
Sections and Subsections
\end_layout

\begin_layout Standard
Type the word 
\family typewriter
Introduction
\family default
 on the first line of your LyX file, and select 
\family sans
Section
\family default
 in the 
\family sans
Environment
\family default
 box.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
You do not have to 
\emph on
select
\emph default
 the line.
 If nothing is selected, LyX changes the paragraph you are currently in
 to the selected environment.
 Alternatively, you can change several paragraphs to a different environment
 by selecting them before picking an environment.
\end_layout

\end_inset

 Be sure to use 
\family sans
Section
\family default
 and 
\emph on
not
\emph default
 
\family sans
Section*
\family default
, which will be covered below.
 LyX numbers the section 
\begin_inset Quotes eld
\end_inset

1
\begin_inset Quotes erd
\end_inset

 and typesets the section heading (title) in a larger font.
 Now hit 
\family sans
Return
\family default
\SpecialChar \@.
 Note that the 
\family sans
Environment
\family default
 box changes from 
\begin_inset Quotes eld
\end_inset

Section
\begin_inset Quotes erd
\end_inset

 back to 
\begin_inset Quotes eld
\end_inset

Standard
\begin_inset Quotes erd
\end_inset

.
 Section headings, like most environments, are assumed to end when you type
 
\family sans
Return
\family default
\SpecialChar \@.
 Type the document introduction: 
\end_layout

\begin_layout LyX-Code
This is an introduction to my first LyX document.
\end_layout

\begin_layout Standard
Hit 
\family sans
Return
\family default
 again, and select 
\family sans
Section
\family default
 from the 
\family sans
Environment
\family default
 box again.
 LyX writes a 
\begin_inset Quotes eld
\end_inset

2
\begin_inset Quotes erd
\end_inset

 and waits for you to type a title.
 Type 
\begin_inset Quotes eld
\end_inset


\family typewriter
More
\begin_inset space ~
\end_inset

Stuff
\family default

\begin_inset Quotes erd
\end_inset

, and you will see that LyX again sets it as a section title.
\end_layout

\begin_layout Standard
It gets better.
 Go to the end of Section
\begin_inset space ~
\end_inset

1 again (after 
\begin_inset Quotes eld
\end_inset

my first LyX document
\begin_inset Quotes erd
\end_inset

) and hit 
\family sans
Return
\family default
 again, and select 
\family sans
Section
\family default
 from the 
\family sans
Environment
\family default
 box again.
 Again, LyX writes 
\begin_inset Quotes eld
\end_inset

2
\begin_inset Quotes erd
\end_inset

 and waits for you to type a title.
 Type 
\family typewriter
About This Document
\family default
.
 Section
\begin_inset space ~
\end_inset


\begin_inset Quotes eld
\end_inset

More Stuff
\begin_inset Quotes erd
\end_inset

, which was Section
\begin_inset space ~
\end_inset

2, has been automatically renumbered to Section
\begin_inset space ~
\end_inset

3! In true WYSIWYM fashion, you just need to identify the text that makes
 up the section titles, and LyX takes care of numbering the sections and
 typesetting them.
\end_layout

\begin_layout Standard
Hit 
\family sans
Return
\family default
 to get back to the 
\family sans
Standard
\family default
 environment, and type the following five lines:
\end_layout

\begin_layout LyX-Code
Sections and subsections are described below.
\end_layout

\begin_layout LyX-Code
Section Description
\end_layout

\begin_layout LyX-Code
Sections are bigger than subsections.
\end_layout

\begin_layout LyX-Code
Subsection description
\end_layout

\begin_layout LyX-Code
Subsections are smaller than sections.
\end_layout

\begin_layout Standard
Click on the second line and select 
\family sans
Subsection
\family default
 from the 
\family sans
Environment
\family default
 box.
 LyX numbers the subsection 
\begin_inset Quotes eld
\end_inset

2.1
\begin_inset Quotes erd
\end_inset

, and typesets it in a font which is bigger than regular text but smaller
 than the section title.
 Change the fourth line 
\family sans
Subsection
\family default
 environment as well.
 As you probably expected, LyX automatically numbered the section 
\begin_inset Quotes eld
\end_inset

2.2
\begin_inset Quotes erd
\end_inset

.
 If you put yet another section before Section
\begin_inset space ~
\end_inset

2, Section
\begin_inset space ~
\end_inset

2 will be renumbered as Section 3, and the subsections will be renumbered
 to 
\begin_inset Quotes eld
\end_inset

3.1
\begin_inset Quotes erd
\end_inset

 and 
\begin_inset Quotes eld
\end_inset

3.2
\begin_inset Quotes erd
\end_inset

.
 
\end_layout

\begin_layout Standard
Further levels of sectioning include 
\family sans
Subsubsection
\family default
, 
\family sans
Paragraph
\family default
, and 
\family sans
Subparagraph
\family default
.
 We will let you play with these on your own.
 You may notice that paragraph and subparagraph headings are not numbered
 by default, and that subparagraphs are indented; see the 
\emph on
User's Guide
\emph default
 for an explanation and how to change this.
 
\family sans
Chapter
\family default
 headings are actually the highest level of sectioning, above 
\family sans
Section
\family default
s, but you are only allowed to use them in certain types (text classes)
 of LyX documents (see Section
\begin_inset space ~
\end_inset


\begin_inset CommandInset ref
LatexCommand ref
reference "sec:Document-Classes"

\end_inset

).
 
\end_layout

\begin_layout Standard
Finally, you may want to have sections or subsections that are not numbered.
 There are environments for this as well.
 If you change one of your section headings to the 
\family sans
Section*
\family default
 environment (you may have to scroll down in the 
\family sans
Environment
\family default
 box to find it), LyX will use the same font size for the heading as it
 uses for a regular section, but it will not number that section.
 There are corresponding 
\begin_inset Quotes eld
\end_inset

starred
\begin_inset Quotes erd
\end_inset

 heading environments for 
\family sans
Subsection
\family default
 and 
\family sans
Subsubsection
\family default
.
 Try changing some of your sections or subsections to the starred environments,
 and note how the other section numbers are updated.
\end_layout

\begin_layout Standard

\series bold
Exercise
\series default
: Fix the section and subsection headings in 
\family typewriter
example_raw.lyx
\family default
.
 
\end_layout

\begin_layout Subsection
Lists and sublists
\end_layout

\begin_layout Standard
LyX has several different environments for typesetting lists.
 The various list environments free you from hitting 
\family sans
Tab
\family default
 a million times when writing an outline, or from renumbering a whole list
 when you want to add a point in the middle of the list.
 Different types of documents logically require different list environments:
\end_layout

\begin_layout Itemize
A slide presentation might use the 
\family sans
Itemize
\family default
 environment's bulleted lists to describe different points.
 
\end_layout

\begin_layout Itemize
An outline would use the 
\family sans
Enumerate
\family default
 environment's numbered lists (and lettered sublists).
 
\end_layout

\begin_layout Itemize
A document describing several software packages could use the 
\family sans
Description
\family default
 environment, where each item in the list begins with a bold-faced word.
 
\end_layout

\begin_layout Itemize
The 
\family sans
List
\family default
 environment is a variation on the 
\family sans
Description
\family default
 environment.
\end_layout

\begin_layout Standard
Let us write a list of reasons why LyX is better than other word processors.
 Somewhere in your document, type:
\end_layout

\begin_layout Standard

\family typewriter
LyX is better than other word processors because: 
\end_layout

\begin_layout Standard
and hit 
\family sans
Return
\family default
.
 Now select 
\family sans
Itemize
\family default
 from the 
\family sans
Environment
\family default
 box.
 LyX writes a 
\begin_inset Quotes eld
\end_inset

bullet
\begin_inset Quotes erd
\end_inset

 on the line.
 Type in your reasons: 
\end_layout

\begin_layout LyX-Code
Typesetting is done for you.
\end_layout

\begin_layout LyX-Code
Math is WYSIWYG
\end_layout

\begin_layout LyX-Code
Lists are very easy to create!
\end_layout

\begin_layout Standard
List environments, unlike headings, do not end when you type 
\family sans
Return
\family default
.
 Instead, LyX assumes you are going on to the next item in the list.
 The above will therefore result in a three-item list.
 If you want more than one paragraph within one list 
\emph on
item
\emph default
, one way is to use the 
\family sans
Protected
\begin_inset space ~
\end_inset

Break
\family default
, which you get by typing 
\family sans
Ctrl+Return
\family default
.
 In order to get out of the list, you need to reselect the 
\family sans
Standard
\family default
 environment (or just use the key binding, 
\family sans
Alt+P
\begin_inset space ~
\end_inset

S
\family default
).
\end_layout

\begin_layout Standard
You have got a beautiful itemized list.
 You might want to run LaTeX to see how the list looks when printed out.
 But what if you wanted to number the reasons? Well, just select the whole
 list
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
LyX will not let you select the first bullet unless you also select the
 paragraph 
\emph on
before
\emph default
 the list, which you probably do not want to do.
 Similarly, you cannot select the actual number in a numbered section title.
 This is on purpose because the bullet or number depends on the document
 settings or text position, respectively.
\end_layout

\end_inset

 and choose 
\family sans
Enumerate
\family default
 from the 
\family sans
Environment
\family default
 box.
 Pow! As we mentioned, if you add or delete a list item, LyX will fix the
 numbering.
\end_layout

\begin_layout Standard
While the list is still selected, you can change to the other two list environme
nts, 
\family sans
Description
\family default
 and 
\family sans
List
\family default
, in order to see what they look like.
 For those two environments, each list item is made up of a term, which
 is the item's first word, followed by a definition, which is the rest of
 the paragraph (until you hit 
\family sans
Return
\family default
.) The term is either typeset in boldface (
\family sans
Description
\family default
) or separated by a 
\begin_inset Quotes eld
\end_inset

Tab
\begin_inset Quotes erd
\end_inset


\begin_inset Foot
status collapsed

\begin_layout Plain Layout
But a typesetter's tab, which will change to fit the size of the largest
 term, not a pathetic, rigid, unchangeable typewriter 
\family sans
Tab
\family default
.
\end_layout

\end_inset

 (
\family sans
List
\family default
) from the rest of the paragraph.
 If you want to have more than one word in the definition, then separate
 the words with 
\family sans
Protected
\begin_inset space ~
\end_inset

Space
\family default
s.
\end_layout

\begin_layout Standard

\series bold
Exercise
\series default
: Typeset the list in 
\family typewriter
example_raw.lyx
\end_layout

\begin_layout Standard
You can nest lists within each other in all sorts of interesting ways.
 An obvious example would be writing outlines.
 Numbered and bulleted lists will have different numbering and bulleting
 schemes for sublists.
 See the 
\emph on
User's Guide
\emph default
 for details on the different sorts of lists and for examples of nestings.
\end_layout

\begin_layout Subsection
Other environments: Verses, Quotations, and more
\end_layout

\begin_layout Standard
There are two environments for setting quotations apart from surrounding
 text: 
\family sans
Quote
\family default
 for short quotes and 
\family sans
Quotation
\family default
 for longer ones.
 Computer code (the 
\family sans
LyX-Code
\family default
 environment 
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
used in this Tutorial for the long typing examples
\end_layout

\end_inset

) is written in a 
\family typewriter
typewriter
\family default
 font; this environment is the only place in LyX where you are allowed to
 use multiple spaces to allow code indenting.
 You can even write poetry using the 
\family sans
Verse
\family default
 style, using 
\family sans
Return
\family default
 to separate stanzas, and 
\family sans
Ctrl+Return
\family default
 to separate lines within a stanza.
 See the 
\emph on
User's Guide
\emph default
 for more complete descriptions of all of the available LyX environments.
\end_layout

\begin_layout Standard

\series bold
Exercise
\series default
: Correctly typeset the 
\family sans
Quote, LyX-Code,
\family default
 and 
\family sans
Verse
\family default
 in
\begin_inset Newline newline
\end_inset


\family typewriter
example_raw.lyx
\end_layout

\begin_layout Chapter
Writing Documents
\end_layout

\begin_layout Standard
The previous chapter hopefully allowed you to get used to writing in LyX.
 It introduced you to the basic editing operations in LyX, as well as the
 powerful method of writing with environments.
 Most people who use LyX, though, will want to write documents: papers,
 articles, books, manuals, or letters.
 This chapter is meant to take you from simply writing text with LyX to
 writing a complete document.
 It will introduce you to text classes, which allow you to write different
 sorts of documents.
 It will then describe many of the additions that turn text into a document,
 such as titles, footnotes, cross references, bibliographies, and tables
 of contents.
\end_layout

\begin_layout Section
Document Classes
\begin_inset CommandInset label
LatexCommand label
name "sec:Document-Classes"

\end_inset


\end_layout

\begin_layout Standard
Different sorts of documents should be typeset differently.
 For example, books are generally printed double-sided, while articles are
 single-sided.
 In addition, many documents contain special environments: letters contain
 some environments — such as the sender's address and the signature — which
 do not make sense in a book or article.
 The LyX 
\emph on
document class
\emph default

\begin_inset Foot
status collapsed

\begin_layout Plain Layout
for LaTeX users: this is equivalent to the LaTeX document class
\end_layout

\end_inset

 takes care of these large scale differences between different sorts of
 documents.
 This Tutorial, for example, was written in the 
\family sans
Book
\family default
 document class.
 Document classes are another major part of the WYSIWYM philosophy; they
 tell LyX how to typeset the document, so you do not need to know how.
\end_layout

\begin_layout Standard
Your document is probably being written in the 
\family sans
Article
\family default
 document class.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
That is usually the default document class
\end_layout

\end_inset

 Try changing to other document classes (using the 
\family sans
Document\SpecialChar \menuseparator
Settings
\family default
 dialog) to see how they are typeset differently.
 If you change your document to the 
\family sans
Book
\family default
 document class and look at the 
\family sans
Environment
\family default
 box, you will see that most of the allowed environments are the same.
 However, you can now use the 
\family sans
Chapter
\family default
 environment.
 If you are ever unsure about which environments you can use in a given
 document class, just consult the 
\family sans
Environment
\family default
 box.
\end_layout

\begin_layout Standard
Font sizes, one- or two-column printing, and page headings are just some
 of the ways journals typesettings differ from one another.
 As the Computer Age continues to mature, journals have begun accepting
 electronic submissions, creating LaTeX 
\begin_inset Quotes eld
\end_inset

style files
\begin_inset Quotes erd
\end_inset

 so that authors can submit correctly typeset articles.
 LyX is set up to support this as well.
 For example, LyX supports typesetting (and extra environments) for the
 American Mathematics Society journals using the 
\family sans
Article
\begin_inset space ~
\end_inset

(AMS)
\family default
 document class.
\end_layout

\begin_layout Standard
Here is a very quick reference to some of the document classes.
 See the 
\emph on
Special Document Classes
\emph default
 section of the 
\emph on
Additional Features
\emph default
 manual for many more details.
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="7" columns="2">
<features>
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Name
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Notes
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
article
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
one-sided, no chapters
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
article (AMS)
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
layout & environments for American Math Society
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
report
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
longer than article, two-sided
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
book
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
report + front and back matter
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
presentation
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
transparencies
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
letter
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
lots of extra environments for address, signature\SpecialChar \ldots{}

\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Section
Templates: Writing a Letter
\end_layout

\begin_layout Standard
One way to write a letter would be to open a new file, and choose a 
\family sans
Letter
\family default
 class in the 
\family sans
Document\SpecialChar \menuseparator
Settings
\family default
 dialog.
 While this is the most obvious way to write a letter, it seems like extra
 work.
 Every time you write a business letter, you want to have your address,
 the address to which you are sending it, a body, a signature, etc.
 LyX therefore has a 
\emph on
template
\emph default
 for letters, which contains a sample letter; once you have a template,
 you can just replace a couple of parts of the letter with your text each
 time you write a letter.
\end_layout

\begin_layout Standard
Open a new file with 
\family sans
File\SpecialChar \menuseparator
New
\begin_inset space ~
\end_inset

from
\begin_inset space ~
\end_inset

Template
\family default
.
 Select 
\family typewriter
letter.lyx
\family default
 as the template.
 Save and print the file to see how the various environments are typeset.
\end_layout

\begin_layout Standard
When you look at the 
\family sans
Environment
\family default
 box, you will see several environments, like the 
\family sans
My
\begin_inset space ~
\end_inset

Address
\family default
 environment, which do not even exist in most other document classes.
 Others, like 
\family sans
Description
\family default
, are familiar.
 You can play around for a while to figure out how the various environments
 work.
 You will notice for example that the 
\family sans
Signature
\family default
 environment has the word 
\begin_inset Quotes eld
\end_inset

Signature:
\begin_inset Quotes eld
\end_inset

 in red before the actual text of the signature.
 This word does not show up in the actual letter, as you will see if you
 view/export the file.
 It is just there to let you know where the signature goes.
 Also, note that it does not matter where in the file the 
\family sans
Signature
\family default
 line is placed.
 Remember, LyX is WYSIWYM; you can put the 
\family sans
Signature
\family default
 environment anywhere you want, but LyX knows that in the printout, the
 signature should be at the end.
\end_layout

\begin_layout Standard
A template is just a regular LyX file.
 This means you can fill in your address and signature and save the file
 as a new template.
 From now on, any time you want to write a letter, you can use the new template
 to save time.
 We do not have to suggest an actual 
\begin_inset Quotes eld
\end_inset

exercise
\begin_inset Quotes erd
\end_inset

 here; just write a letter to someone!
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
One warning, if you are writing from a template.
 If you erase all of the text in an environment — for example, if you erase
 the whole 
\family sans
My
\begin_inset space ~
\end_inset

Address
\family default
 field so that you can replace it with your own — and then you move the
 cursor without writing any text, the environment may disappear.
 This is because most environments cannot exist without any text in them.
 Just reselect the environment from the 
\family sans
Environment
\family default
 box to get it back.
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Templates can be a huge time-saver, and we urge you to use them whenever
 possible.
 In addition, they can help a person learn how to use some of the fancier
 document classes.
 Finally, they may be useful for a person who is configuring LyX for a bunch
 of less computer-aware users.
 When they are first learning LyX, it will be much less intimidating if
 they have a letter template customized for their company, for example.
\end_layout

\begin_layout Section
Document Titles
\end_layout

\begin_layout Standard
LyX (like LaTeX) considers the title — which may contain the actual title,
 the author, the date, and even an abstract of a paper — to be a separate
 part of the document.
\end_layout

\begin_layout Standard
Go back to your LyX document and make sure it is using the 
\family sans
Article
\family default
 document class.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
You should not be using the letter any more, since the 
\family sans
Letter
\family default
 document class does not allow titles.
\end_layout

\end_inset

 Type a title on the first line, and change the line to the 
\family sans
Title
\family default
 environment.
 On the next line, type your name and change it to the 
\family sans
Author
\family default
 environment.
 On the next line, write the date in the 
\family sans
Date
\family default
 environment.
 Type a paragraph or two summarizing your document using the 
\family sans
Abstract
\family default
 environment.
 Notice how the title is presented when it is printed out.
 If you change the document format to Book, you will get a separate title
 page, like the first page of this tutorial.
\end_layout

\begin_layout Standard

\series bold
Exercise
\series default
: Fix the title, date, and author in 
\family typewriter
example_raw.lyx
\end_layout

\begin_layout Section
Labels and Cross-References
\end_layout

\begin_layout Standard
You can label section headings, list items, formulas, footnotes, and floats
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
Floats are explained in the 
\emph on
User's Guide
\emph default
 and the 
\emph on
Embedded Objects
\emph default
 manual.
\end_layout

\end_inset

 in your document.
 Once you do so, you can refer to this section in other parts of the document,
 using cross-references.
 You can refer either to the section's number, or to the page that the section
 appears on.
 As with section numbering, LyX also takes care about cross-reference numbering
 for you.
 Automatic labels and cross-references are among the most significant advantages
 of LyX (and LaTeX) over conventional word processors.
 
\end_layout

\begin_layout Subsection
Your first label
\end_layout

\begin_layout Standard
Go to our second section, whose title is 
\begin_inset Quotes eld
\end_inset

About This Document
\begin_inset Quotes erd
\end_inset

.
 Click at the end of the section title line, and select 
\family sans
Insert\SpecialChar \menuseparator
Label
\family default
 or the toolbar button 
\begin_inset Graphics
        filename ../images/label-insert.png
        scale 75
        scaleBeforeRotation

\end_inset

.
 A dialog asks you for a label name, and gives you a suggestion.
 When you click on 
\family sans
OK
\family default
, the label name will be placed in a box next to the section title.
\end_layout

\begin_layout Standard
So far you have not done anything — the DVI output will look exactly the
 same, since labels do not show up in the printed document.
 However, now that you have added a label, you can refer to that label with
 cross-references.
 We will do that next.
\end_layout

\begin_layout Subsection
Your first cross-reference
\end_layout

\begin_layout Standard
Place the cursor somewhere in section
\begin_inset space ~
\end_inset

2 of your document.
 Type 
\end_layout

\begin_layout LyX-Code
If you want to know more about this document, then see 
\begin_inset Newline newline
\end_inset

section, which can be found on page.
\end_layout

\begin_layout Standard
Now — with the cursor after the word `Section' — choose 
\family sans
Insert\SpecialChar \menuseparator
Cross
\begin_inset space ~
\end_inset

Reference
\family default
 or the toolbar button 
\begin_inset Graphics
        filename ../images/dialog-show-new-inset_ref.png
        scale 75
        scaleBeforeRotation

\end_inset

.
 The Cross-reference dialog pops up.
 It shows a list of the possible labels you can reference.
 At the moment, there should be only one, `sec:About-This-Document'.
 First, select the drop-down menu labeled Format and select '<reference>
 on page <page>.' Then select `sec:About-This-Document' (it may be selected
 by default), and a reference marker will appear containing `Ref+Text: sec:About
-This-Document' (To be really correct, you should put a 
\family sans
Protected
\begin_inset space ~
\end_inset

Space
\family default
 in between the word `Section' and the reference).
 Alternatively to that method, you can right-click on a label and use in
 the appearing context menu 
\family sans
Copy as Reference
\family default
.
 The cross-reference to this label is now in the clipboard and can be copied
 to the actual cursor position via the menu 
\family sans
Edit\SpecialChar \menuseparator
Paste
\family default
 (shortcut 
\family sans
Ctrl+V
\family default
).
 In the printed document, this reference marker will be replaced with the
 section number and then the page number.
 View your document as DVI, and you will see that LaTeX has been even cleverer
 than that.
 It refers to `Section 2' and depending how much text you have between the
 start of Section 2 and this cross-reference you may see `on this page,'
 'on the previous page' or `on page n' (whereas 
\emph on
n
\emph default
 is the page number).
\end_layout

\begin_layout Standard
Conveniently, a cross-reference acts as a hyperlink when you are editing
 a document in LyX; clicking on it will pop up the 
\family sans
Cross-reference
\family default
 dialog, clicking 
\family sans
Go
\begin_inset space ~
\end_inset

to
\begin_inset space ~
\end_inset

Label
\family default
 will move the cursor to the referenced label.
\end_layout

\begin_layout Subsection
More fun with labels
\end_layout

\begin_layout Standard
We told you that LyX takes care about numbering cross-references; now you
 can test that.
 Add a new section before Section
\begin_inset space ~
\end_inset

2.
 Update the DVI view, and — voilà! — the section cross reference changed
 to 
\begin_inset Quotes eld
\end_inset

3
\begin_inset Quotes erd
\end_inset

! Change the section 
\begin_inset Quotes eld
\end_inset

About this Document
\begin_inset Quotes erd
\end_inset

 to a subsection, and the cross-reference will reference Subsection
\begin_inset space ~
\end_inset

2.1 instead of Section
\begin_inset space ~
\end_inset

3.
 The page reference will not change unless you add a whole page of text
 before the label, of course.
 
\end_layout

\begin_layout Standard
If you want some more practice with labels, then try putting a new label
 where your first cross-reference was, and refer to that label from elsewhere
 in the document.
 If you will be inserting cross-references often, it may be convenient to
 leave the 
\family sans
Cross-reference
\family default
 dialog open.
\end_layout

\begin_layout Standard
If you want to make sure that the cross-referencing gets the pages right
 even for larger documents, 
\family sans
Copy
\family default
 a couple pages of text from the 
\emph on
User's Guide
\emph default
 to the clipboard, and 
\family sans
Paste
\family default
 the stolen text into your document.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
By the way, copying a chapter title may cause an error, because chapters
 are not allowed in the article class, see section
\begin_inset space ~
\end_inset


\begin_inset CommandInset ref
LatexCommand ref
reference "sec:Document-Classes"

\end_inset

.
 If this happens, just delete the chapter title.
\end_layout

\end_inset


\end_layout

\begin_layout Standard

\series bold
Exercise
\series default
: Fix the references in 
\family typewriter
example_raw.lyx
\end_layout

\begin_layout Section
Footnotes and Margin Notes
\end_layout

\begin_layout Standard
Footnotes can be added using the toolbar button 
\begin_inset Graphics
        filename ../images/footnote-insert.png
        scale 75
        scaleBeforeRotation

\end_inset

 or the menu 
\family sans
Insert\SpecialChar \menuseparator
Footnote
\family default
.
 Click at the end of the word 
\begin_inset Quotes eld
\end_inset

LyX
\begin_inset Quotes erd
\end_inset

 somewhere in your document and click the 
\begin_inset Graphics
        filename ../images/footnote-insert.png
        scale 75
        scaleBeforeRotation

\end_inset

 button.
 A footnote box appears where you can enter the text of the footnote.
 LyX should place the cursor at the beginning of the footnote box.
 Type
\end_layout

\begin_layout LyX-Code
LyX is a typesetting word processor.
\end_layout

\begin_layout Standard
Now click on the button labeled 
\begin_inset Quotes eld
\end_inset

foot
\begin_inset Quotes erd
\end_inset

.
 The footnote box is closed, leaving the button showing where the footnote
 marker will be in the printed text; this is called 
\begin_inset Quotes eld
\end_inset

folding
\begin_inset Quotes erd
\end_inset

 the footnote.
 You can unfold the footnote at any time and re-edit its text by clicking
 again on the 
\begin_inset Quotes eld
\end_inset

foot
\begin_inset Quotes erd
\end_inset

 button.
\end_layout

\begin_layout Standard
A footnote can be cut and pasted like normal text.
 Go ahead; try it! All you need to do is select the footnote button
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
It may be easier to select it using the keyboard.
 You might accidentally open the footnote if you are trying to select the
 marker itself with the mouse.
\end_layout

\end_inset

 and 
\family sans
Cut
\family default
 and 
\family sans
Paste
\family default
 it.
 In addition, you can change regular text to a footnote, by selecting it
 and hitting the 
\begin_inset Graphics
        filename ../images/footnote-insert.png
        scale 75
        scaleBeforeRotation

\end_inset

 button; change a footnote to regular text by hitting the 
\family sans
Backspace
\family default
 key when the cursor is in the first position of a footnote, or by hitting
 the 
\family sans
Delete
\family default
 key when the cursor is in the very last position of the footnote, respectively.
\end_layout

\begin_layout Standard
Margin notes can be added using the menu 
\family sans
Insert\SpecialChar \menuseparator
Marginal
\begin_inset space ~
\end_inset

Note
\family default
 or the toolbar button 
\begin_inset Graphics
        filename ../images/marginalnote-insert.png
        scale 75
        scaleBeforeRotation

\end_inset

\SpecialChar \@.
 Margin notes are like footnotes, except that: 
\end_layout

\begin_layout Itemize
the on-screen boxes say 
\begin_inset Quotes eld
\end_inset

margin
\begin_inset Quotes erd
\end_inset

 instead of 
\begin_inset Quotes eld
\end_inset

foot
\begin_inset Quotes erd
\end_inset


\end_layout

\begin_layout Itemize
the notes will be placed in the margin, instead of below the text 
\end_layout

\begin_layout Itemize
margin notes are not numbered
\end_layout

\begin_layout Standard
Change your LyX footnote back to text, then select and change it to a margin
 note.
 Run LaTeX again to see what the margin note looks like.
\end_layout

\begin_layout Standard

\series bold
Exercise
\series default
: Fix the footnote in 
\family typewriter
example_raw.lyx
\end_layout

\begin_layout Section
Bibliographies
\begin_inset CommandInset label
LatexCommand label
name "sec:bibliographies"

\end_inset


\end_layout

\begin_layout Standard
Bibliographies (at least in the exact sciences) are similar to cross references.
 The bibliography contains a list of references at the end of the document,
 and they can be referenced from within the document.
 Like section titles, LyX and LaTeX make your job easier by automatically
 numbering the bibliography items and changing citations when the item numbers
 change.
\end_layout

\begin_layout Standard
Go to the end of the document and switch to the 
\family sans
Bibliography
\family default
 environment.
 Now, each paragraph you type will be a reference.
 Type 
\begin_inset Quotes eld
\end_inset


\family typewriter
The Lyx Tutorial, by the LyX Documentation Team
\family default

\begin_inset Quotes erd
\end_inset

 as your first reference.
 Note that LyX automatically puts a number in a box before each reference.
 Click on the boxed reference number, and the 
\family sans
Bibliography
\begin_inset space ~
\end_inset

item
\family default
 dialog box appears.
 The 
\family sans
Key
\family default
 is to refer to this reference within the LyX document, the 
\family sans
Label
\family default
 appears in output.
 When no 
\family sans
Label
\family default
 is set (default), you will see the number of the bibliography in the output.
 Change now the 
\family sans
Key
\family default
 field to 
\begin_inset Quotes eld
\end_inset

lyxtutorial
\begin_inset Quotes erd
\end_inset

 to make it easy to remember.
\end_layout

\begin_layout Standard
Now pick somewhere in your document that you would like to insert a reference.
 Do so with 
\family sans
Insert\SpecialChar \menuseparator
Citation
\family default
 or the toolbar button 
\begin_inset Graphics
        filename ../images/dialog-show-new-inset_citation.png
        scale 75
        scaleBeforeRotation

\end_inset

.
 A 
\family sans
Citation
\family default
 dialog appears.
 The right panel in this dialog lists all the bibliography entries, and
 this field allows you to choose which bibliography item you want to cite.
 Select 
\begin_inset Quotes eld
\end_inset

lyxtutorial
\begin_inset Quotes erd
\end_inset

 (right now, that is the only item in the bibliography), then use the 
\family sans
Add
\family default
 button in the center to insert it.
 (You can have multiple citations in the same place by transferring a number
 of keys this way.) Now view your file as DVI, and you will see that the
 citation appears in brackets in the text, referring to the bibliography
 at the end of the document.
\end_layout

\begin_layout Standard
The 
\family sans
Text
\begin_inset space ~
\end_inset

after
\family default
 field in the 
\family sans
Citation
\family default
 dialog will put a remark (such as a reference to a page or chapter within
 the referenced book or article) in the brackets after the reference.
 If you want the references to have labels instead of numbers in the printed
 output (for example, some journals would use 
\begin_inset Quotes eld
\end_inset

[Smi95]
\begin_inset Quotes erd
\end_inset

 to refer to a paper written by Smith in 1995), use the 
\family sans
Label
\family default
 field in the 
\family sans
Bibliography
\begin_inset space ~
\end_inset

item
\family default
 dialog.
 As usual, see the 
\emph on
User's Guide
\emph default
 for details.
\end_layout

\begin_layout Standard

\series bold
Exercise:
\series default
 Fix the bibliography and citation in 
\family typewriter
example_raw.lyx
\end_layout

\begin_layout Section
Table of Contents
\end_layout

\begin_layout Standard
You may want to put a table of contents at the beginning of your document.
 LyX makes this very easy to do.
 Just hit 
\family sans
Return
\family default
 after your document title and before your first section title and choose
 
\family sans
Insert\SpecialChar \menuseparator
List
\begin_inset space ~
\end_inset

/
\begin_inset space ~
\end_inset

TOC\SpecialChar \menuseparator
Table
\begin_inset space ~
\end_inset

of
\begin_inset space ~
\end_inset

Contents
\family default
.
 The words 
\begin_inset Quotes eld
\end_inset

Table of Contents
\begin_inset Quotes erd
\end_inset

 will appear in a button on the first line of the document.
 
\end_layout

\begin_layout Standard
This may not appear to be very useful.
 However, if you look at your DVI file, you will see that a table of contents
 has been generated, listing the various sections and subsections in your
 document.
 As usual, if you reorder sections or create new ones, you will see those
 changes in the DVI file when you update it.
 
\end_layout

\begin_layout Standard
The table of contents is not printed in the on-screen version of the document.
 But you can display the table of contents in a separate window by clicking
 on the table of contents button, or by using 
\family sans
Document\SpecialChar \menuseparator
Outline
\family default
 or the toolbar button 
\begin_inset Graphics
        filename ../images/dialog-toggle_toc.png
        scale 75
        scaleBeforeRotation

\end_inset

.
 This menu will work even if you do not have a table of contents inset in
 your document.
 This is a very useful tool for moving around your document parts.
 Clicking on a (sub)section title in the 
\family sans
Outline
\family default
 window will highlight that line and move the display (in the LyX editing
 window) to that place in the document.
 You can also use the arrow keys to move up and down in the table of contents.
 You may therefore find it convenient to leave this window open throughout
 editing sessions.
 You can get similar functionality from the 
\family sans
Navigate
\family default
 menu, though, where the table of contents appears automatically.
\end_layout

\begin_layout Standard
To get rid of the Table of Contents, you can delete the table of contents
 button just like any other text.
\end_layout

\begin_layout Standard

\series bold
Exercise
\series default
: Fix the table of contents in 
\family typewriter
example_raw.lyx
\end_layout

\begin_layout Chapter
Using Math
\end_layout

\begin_layout Standard
LaTeX is used by many scientists because it outputs great looking equations,
 avoiding the control characters used by word processors and their equation
 editors.
 Many of these scientists are frustrated, however, because writing equations
 in LaTeX is more like programming than writing.
 Happily, LyX has WYSIWYM support for equations.
 If you are used to LaTeX, you will find that all of the usual LaTeX math
 commands can be typed in normally, but they will show up in a WYSIWYM fashion.
 If, on the other hand, you have  never written in LaTeX, then the 
\family sans
Math
\begin_inset space ~
\end_inset

Panel
\family default
 will allow you to write professional-looking math quickly and easily.
\end_layout

\begin_layout Section
Math Mode
\end_layout

\begin_layout Standard
Somewhere in your LyX document, type: 
\end_layout

\begin_layout LyX-Code
I like what Einstein said, E=mc^2, because it is so simple.
 
\end_layout

\begin_layout Standard
Now, that equation does not look very good in LyX and in the output; there
 is no space between the letters and the equals sign, and you would like
 to write an actual superscript for the 
\begin_inset Quotes eld
\end_inset

2
\begin_inset Quotes erd
\end_inset

.
 That bad typesetting happened because we did not tell LyX that we were
 writing a mathematical expression, so it typeset the equation like regular
 old text.
\end_layout

\begin_layout Standard
Instead, we create a formula that will get typeset properly.
 In order to create a formula, just click the toolbar button 
\begin_inset Graphics
        filename ../images/math-mode.png
        scale 75
        scaleBeforeRotation

\end_inset

 or use the menu 
\family sans
Insert\SpecialChar \menuseparator
Math\SpecialChar \menuseparator
Inline
\begin_inset space ~
\end_inset

Formula
\family default
.
 LyX will insert a little blue square, which is an empty math formula.
 Now just type 
\family typewriter
E=mc^2
\family default
 again.
 The expression is typed in blue, and the blue square disappears as soon
 as the formula is not empty.
 Now type 
\family sans
Esc
\family default
 to leave the equation The purple markers disappear, leaving the cursor
 to the right of the expression, and now if you type something, it will
 be regular text.
\end_layout

\begin_layout Standard
Looking at the output you will notice that the expression was typeset nicely,
 with spaces between the letters and the equals sign, and a superscript
 
\begin_inset Quotes eld
\end_inset

2
\begin_inset Quotes erd
\end_inset

.
 Letters in math mode are assumed to be variables, and come out in italics.
 Numbers are just numbers.
\end_layout

\begin_layout Standard
This math editor is another example of the WYSIWYM philosophy.
 In LaTeX, you write a mathematical expression using text and commands like
 
\family typewriter

\backslash
sqrt
\family default
; this can be frustrating, because you cannot see what an expression looks
 like until you run the file under LaTeX and you may have to spend time
 finding e.
\begin_inset space \thinspace{}
\end_inset

g.
\begin_inset space \space{}
\end_inset

missing brackets.
 LyX does not attempt to get the expression to look perfect (WYSIWYG), but
 it gives you an extremely good idea of what the expression will look like.
 LaTeX then takes care of the professional typesetting.
\end_layout

\begin_layout Section
Navigating an Equation
\end_layout

\begin_layout Standard
Now let us change 
\begin_inset Formula $E=mc^{2}$
\end_inset

 to 
\begin_inset Formula $E=1+mc^{2}$
\end_inset

.
 Use the arrow keys to move the cursor into the expression.
 Note that when you enter the expression, the purple markers appear to let
 you know you are editing math.
 Now you can use 
\family sans
Left
\family default
 and 
\family sans
Right
\family default
 to move the cursor past the equals sign, and just type 
\begin_inset Quotes eld
\end_inset

1+
\begin_inset Quotes erd
\end_inset

.
 Again, you can use the arrow keys or 
\family sans
Esc
\family default
 to leave the formula\SpecialChar \@.

\end_layout

\begin_layout Standard
Other than the special keys described below, typing in math mode is like
 editing regular text.
 Use 
\family sans
Delete
\family default
 (or 
\family sans
Backspace
\family default
) to delete things.
 Select text either with the arrow keys or with the mouse.
 
\family sans
Edit\SpecialChar \menuseparator
Undo
\family default
 works in math mode as well as cut and paste.
 One thing to be careful of: if you are left or right outside a formula
 and you press 
\family sans
Delete
\family default
 or 
\family sans
Backspace
\family default
 respectively, you delete the whole formula.
 Luckily, you can just use 
\family sans
Undo
\family default
 to get it back.
\end_layout

\begin_layout Standard
What if you want to change 
\begin_inset Formula $E=mc^{2}$
\end_inset

 to 
\begin_inset Formula $E=mc^{2.5}+1$
\end_inset

? Again, you can use the mouse to click in the right place.
 However, you can also use the arrow keys.
 If the cursor is just after the 
\begin_inset Quotes eld
\end_inset

c
\begin_inset Quotes erd
\end_inset

 but before the 
\begin_inset Quotes eld
\end_inset

2
\begin_inset Quotes erd
\end_inset

, then press 
\family sans
Up
\family default
 and the cursor is moved to the level of the superscript, just before the
 
\begin_inset Quotes eld
\end_inset

2
\begin_inset Quotes erd
\end_inset

.
 Add the 
\begin_inset Quotes eld
\end_inset

.5
\begin_inset Quotes erd
\end_inset

.
 Now, hitting 
\family sans
Down
\family default
 will move the cursor back to the regular level.
 If you hit 
\family sans
Space
\family default
 instead of 
\family sans
Down
\family default
, the cursor will be placed 
\emph on
after
\emph default
 the superscript (so that you can then type the 
\begin_inset Quotes eld
\end_inset

+1
\begin_inset Quotes erd
\end_inset

).
\end_layout

\begin_layout Section
Exponents and Indices
\end_layout

\begin_layout Standard
An exponent can be entered from the 
\family sans
Math
\begin_inset space ~
\end_inset

Toolbar
\family default
 (see below), but it is actually simpler just to type the caret key, 
\begin_inset Quotes eld
\end_inset

^
\begin_inset Quotes erd
\end_inset

.
 LyX will place another blue rectangle in the superscript, so that whatever
 you write next will be superscripted, and in a smaller font size.
 Everything you type until you hit a 
\family sans
Space
\family default
 (or 
\family sans
Esc
\family default
 to exit the formula entirely) will be in the superscript.
\end_layout

\begin_layout Standard
Writing a subscript (index) is just easy; start one by typing the underscore
 key 
\begin_inset Quotes eld
\end_inset

_
\begin_inset Quotes erd
\end_inset

 .
 You can subscript and superscript both subscripts and superscripts like
 this: 
\begin_inset Formula $A_{a_{0}+b^{2}}+C^{a_{0}+b^{2}}$
\end_inset

.
 
\end_layout

\begin_layout Standard

\series bold
Exercise
\series default
: Put equation 1 of 
\family typewriter
example_raw.lyx
\family default
 into math mode.
\end_layout

\begin_layout Section
The Math toolbar
\end_layout

\begin_layout Standard
The 
\family sans
Math
\begin_inset space ~
\end_inset

toolbar
\family default
 is a convenient way to enter symbols or to perform complicated formula
 operations.
 Many of these operations can be accomplished from the keyboard or the 
\family sans
Edit\SpecialChar \menuseparator
Math
\family default
 or 
\family sans
Insert\SpecialChar \menuseparator
Math
\family default
 menus.
 However, we are going to concentrate on using the 
\family sans
Math
\begin_inset space ~
\end_inset

toolbar
\family default
, just to let you know what is out there; you can learn keyboard shortcuts
 and commands later from the 
\emph on
Math
\emph default
 manual.
\end_layout

\begin_layout Standard
The 
\family sans
Math
\begin_inset space ~
\end_inset

toolbar
\family default
 is shown when the cursor is in a formula and can also be turned on manually
 in the menu 
\family sans
View\SpecialChar \menuseparator
Toolbars
\family default
.
 When you click there on 
\begin_inset Quotes eld
\end_inset

Math
\begin_inset Quotes erd
\end_inset

 the toolbar will be shown permanently at the bottom; this state is visualized
 in the 
\family sans
Toolbars
\family default
 menu with a checkmark.
 When you click in this state again on 
\begin_inset Quotes eld
\end_inset

Math
\begin_inset Quotes erd
\end_inset

 in the 
\family sans
Toolbars
\family default
 menu, the 
\family sans
math toolbar
\family default
 is only shown when the cursor is within a formula; this state is visualized
 by the renaming of the menu entry from 
\begin_inset Quotes eld
\end_inset

Math
\begin_inset Quotes erd
\end_inset

 to 
\begin_inset Quotes eld
\end_inset

Math
\begin_inset space ~
\end_inset

(auto)
\begin_inset Quotes erd
\end_inset

.
\end_layout

\begin_layout Subsection
Greek and symbols
\end_layout

\begin_layout Standard
The 
\family sans
Math
\begin_inset space ~
\end_inset

toolbar
\family default
 allows you to choose from a large array of symbols used in math: operators,
 arrows, relationships, delimiters, special characters, sums and integrals.
 Note that subscripting and superscripting allow you to put lower and upper
 limits on sums and integrals.
 
\end_layout

\begin_layout Subsection
Square roots, accents, and delimiters
\end_layout

\begin_layout Standard
To type a square root, just click on the button 
\begin_inset Graphics
        filename ../images/math/sqrt.png
        scale 75
        scaleBeforeRotation

\end_inset

.
 The square root appears, and the cursor is in a new insertion point inside
 the square root.
 You can type variables, numbers, other square roots, fractions, whatever
 you want.
 LyX will automatically resize the square root to fit what is inside.
\end_layout

\begin_layout Standard
Accenting a character (
\begin_inset Formula $\overrightarrow{v}$
\end_inset

) or group of characters (
\begin_inset Formula $\overrightarrow{a+b}$
\end_inset

) is done the same way.
 Decorations are available from the toolbar via the button 
\begin_inset Graphics
        filename ../images/math/hat.png
        scale 75
        scaleBeforeRotation

\end_inset

.
 Click on a decoration, and LyX will insert that decoration with an insertion
 point under (or over) it.
 Just type what you want in the insertion point.
 There are two sets of decorations: those that resize with the text you
 type, and those that have a fixed size, and are most appropriate for a
 single letter.
 
\end_layout

\begin_layout Standard
Delimiters such as parentheses, brackets, and braces work similarly, but
 are a bit more complicated.
 Hit the delimiter button 
\begin_inset Graphics
        filename ../images/dialog-show_mathdelimiter.png
        scale 75
        scaleBeforeRotation

\end_inset

 to pop up the 
\family sans
Delimiter
\family default
 dialog.
 Your current selection of delimiters is displayed in a box.
 It is a pair of parentheses by default, but you can choose a pair of braces,
 a brace and a parenthesis, or choose the empty square to have something
 like 
\begin_inset Quotes eld
\end_inset


\begin_inset Formula $a=\left\langle 7\right.$
\end_inset


\begin_inset Quotes erd
\end_inset

 (the empty delimiter is displayed as a broken line in LyX, but will not
 show up in the output).
\end_layout

\begin_layout Standard
If you are lazy, you can type actual parentheses in math mode, rather than
 using the 
\family sans
Delimiter
\family default
 dialog.
 However, those parentheses will be the same size as regular text, which
 will look bad if you have a big fraction or matrix inside the parentheses.
 So it is better in this case to use one of the three delimiter buttons
 that insert directly e.
\begin_inset space \thinspace{}
\end_inset

g.
\begin_inset space \space{}
\end_inset

a (
\begin_inset space \thinspace{}
\end_inset

) pair.
\end_layout

\begin_layout Standard
You can also put delimiters or a square root sign or a decoration on already
 existing formula parts.
 Select the portion of the formula that you want to adjust, and then click
 on the button you want from the 
\family sans
Math
\begin_inset space ~
\end_inset

Toolbar
\family default
.
 Try using this to change Newton's second law from scalar to vector form
 (
\begin_inset Formula $f=ma$
\end_inset

 to 
\begin_inset Formula $\overrightarrow{f}=m\overrightarrow{a}$
\end_inset

).
 Once you have  learned about matrices, this is how you will put parentheses
 or brackets around them.
\end_layout

\begin_layout Subsection
Fractions
\end_layout

\begin_layout Standard
To create a fraction, click on the fraction button 
\begin_inset Graphics
        filename ../images/math/frac.png
        lyxscale 75
        scale 60
        scaleBeforeRotation

\end_inset

 in the 
\family sans
Math
\begin_inset space ~
\end_inset

Toolbar
\family default
.
 LyX writes two insertion points in a fraction.
 As you would expect, you can use arrow keys or the mouse to move around
 a fraction.
 Click on the top square and type 
\begin_inset Quotes eld
\end_inset

1
\begin_inset Quotes erd
\end_inset

.
 Now hit 
\family sans
Down
\family default
 and type 
\begin_inset Quotes eld
\end_inset

2
\begin_inset Quotes erd
\end_inset

.
 You have made a fraction! Of course you can type anything within each of
 the two boxes: variables with exponents, square roots, other fractions,
 whatever.
 
\end_layout

\begin_layout Standard

\series bold
Exercise
\series default
: Put equation 2 of 
\family typewriter
example_raw.lyx
\family default
 into math mode.
\end_layout

\begin_layout Subsection
Functions: lim, log, sin and others
\end_layout

\begin_layout Standard
Because letters in math mode are considered to be variables, if you type
 
\begin_inset Quotes eld
\end_inset

sin
\begin_inset Quotes erd
\end_inset

 in math mode, LyX thinks you are typing the product of the three variables
 
\begin_inset Formula $s$
\end_inset

, 
\begin_inset Formula $i$
\end_inset

, and 
\begin_inset Formula $n$
\end_inset

.
 The three letters will be typeset in italics, when what you really wanted
 was the word 
\begin_inset Quotes eld
\end_inset

sin
\begin_inset Quotes erd
\end_inset

 typeset in Roman.
 In addition, LyX will not put a space between the word 
\begin_inset Quotes eld
\end_inset

sin
\begin_inset Quotes erd
\end_inset

 and the 
\begin_inset Quotes eld
\end_inset

x
\begin_inset Quotes erd
\end_inset

 (pressing 
\family sans
Space
\family default
 will exit the formula).
 So how do you get 
\begin_inset Quotes eld
\end_inset


\begin_inset Formula $\sin(x)$
\end_inset


\begin_inset Quotes erd
\end_inset

 instead of 
\begin_inset Quotes eld
\end_inset


\begin_inset Formula $sin(x)$
\end_inset


\begin_inset Quotes erd
\end_inset

?
\end_layout

\begin_layout Standard
Click on the 
\family sans
Math
\begin_inset space ~
\end_inset

Toolbar
\family default
 button 
\begin_inset Graphics
        filename ../images/math/functions.png
        scale 75
        scaleBeforeRotation

\end_inset

 and then on 
\begin_inset Quotes eld
\end_inset

sin
\begin_inset Quotes erd
\end_inset

 in the appearing function list.
 The word 
\begin_inset Quotes eld
\end_inset

sin
\begin_inset Quotes erd
\end_inset

 is displayed in LyX in black, and set in upright roman type.
 The whole word is treated as one symbol, so if you type 
\family sans
Backspace
\family default
, it will delete the whole word.
 Now type 
\begin_inset Quotes eld
\end_inset

(x)
\begin_inset Quotes erd
\end_inset

, which will be written in blue italics, like you expect in a formula.
 In the output, the expression will be correctly typeset.
 Try it out.
\end_layout

\begin_layout Standard
The function list includes other trigonometric functions and their inverses,
 hyperbolic functions, logarithms, limits, and quite a few others.
 These functions can take subscripts and superscripts, important for typing
 
\begin_inset Quotes eld
\end_inset


\begin_inset Formula $\cos^{2}\theta$
\end_inset


\begin_inset Quotes erd
\end_inset

 or 
\begin_inset Quotes eld
\end_inset


\begin_inset Formula $\lim_{n\rightarrow\infty}$
\end_inset


\begin_inset Quotes erd
\end_inset

.
\end_layout

\begin_layout Standard

\series bold
Exercise
\series default
: Put equation 3 of 
\family typewriter
example_raw.lyx
\family default
 into math mode.
\end_layout

\begin_layout Subsection
Matrices
\end_layout

\begin_layout Standard
Click on the matrix button 
\begin_inset Graphics
        filename ../images/dialog-show_mathmatrix.png
        scale 75
        scaleBeforeRotation

\end_inset

 in the 
\family sans
Math
\begin_inset space ~
\end_inset

Toolbar
\family default
.
 The appearing dialog allows you to choose how many rows and columns you
 want in your matrix.
 Choose 2 rows and 3 columns and hit 
\family sans
OK
\family default
.
 LyX prints 6 insertion points in a 
\begin_inset Formula $2\times3$
\end_inset

 matrix.
 As usual, you can put any sort of formula expression (a square root, another
 matrix, etc.) in each insertion point.
 You can also leave some of the insertion points empty if you want.
\end_layout

\begin_layout Standard

\family sans
Tab
\family default
 can be used to move horizontally between the columns of a matrix.
 Alternatively, you can use the arrow keys to move around - hitting 
\family sans
Right
\family default
 at the end of one box will move to the next box, 
\family sans
Down
\family default
 will move to the next row, etc.
\end_layout

\begin_layout Standard
If you need to change the number of rows and columns, use the menu 
\family sans
Edit\SpecialChar \menuseparator
Rows
\begin_inset space \thinspace{}
\end_inset

&
\begin_inset space \thinspace{}
\end_inset

Columns
\family default
 or the math toolbar buttons 
\begin_inset Graphics
        filename ../images/tabular-feature_append-row.png
        scale 75
        scaleBeforeRotation

\end_inset

, 
\begin_inset Graphics
        filename ../images/tabular-feature_delete-row.png
        scale 75
        scaleBeforeRotation

\end_inset

, 
\begin_inset Graphics
        filename ../images/tabular-feature_append-column.png
        scale 75
        scaleBeforeRotation

\end_inset

, 
\begin_inset Graphics
        filename ../images/tabular-feature_delete-column.png
        scale 75
        scaleBeforeRotation

\end_inset

.
\end_layout

\begin_layout Standard
See the 
\emph on
User's Guide
\emph default
 for information on how to change the horizontal alignment of each column,
 and how to change the vertical position of the whole matrix.
 Note that if you want to write a table containing text, you should use
 LyX's wonderful table support, rather than trying to write text in a matrix.
\end_layout

\begin_layout Subsection
Display mode
\end_layout

\begin_layout Standard
All of the expressions we have written so far have been on the same line
 as the text that came before and after them, otherwise known as inline
 expressions.
 This is fine for short, simple expressions, but if you want to write larger
 ones, or if you want your expressions to stand out from the text, you need
 to write them in display mode.
 In addition, only displayed expressions can be labeled and numbered (see
 the 
\emph on
User's Guide
\emph default
), and multi-line equations must be in display mode.
\end_layout

\begin_layout Standard
While being in a formula, click on the display button 
\begin_inset Graphics
        filename ../images/math-display.png
        scale 75
        scaleBeforeRotation

\end_inset

 in the 
\family sans
Math
\begin_inset space ~
\end_inset

Toolbar
\family default
.
 This centers the formula and adds a blank line before and after it.
 Now type in an expression and compile your file to see how it looks.
 The display button is actually a toggle; use it now to change a couple
 of your expressions to display mode and back.
 
\end_layout

\begin_layout Standard
Display mode has a couple differences from inline mode:
\end_layout

\begin_layout Itemize
The default font is larger for a few symbols, like 
\begin_inset Formula $\sum$
\end_inset

 and 
\begin_inset Formula $\int$
\end_inset


\end_layout

\begin_layout Itemize
Subscripts and superscripts for limits and sums (but not integrals) are
 written under and over rather than next to the symbols
\end_layout

\begin_layout Itemize
Text is centered
\end_layout

\begin_layout Standard
Other than these differences, though, displayed expressions and inline expressio
ns are very similar.
\end_layout

\begin_layout Standard
One final note about the way displayed formulas are typeset: Be careful
 about whether you are putting your equation into a new paragraph or not.
 If your formula is in the middle of a sentence or paragraph, then do not
 press 
\family sans
Return
\family default
.
 Doing so will cause the text 
\emph on
after
\emph default
 the formula to start a new paragraph.
 That text will be indented or follow a blank line, depending on your document
 paragraph settings, which is probably not what you want.
\end_layout

\begin_layout Standard

\series bold
Exercise
\series default
: Put the various equations in 
\family typewriter
example_raw.lyx
\family default
 into display mode, and see how they are typeset differently.
\end_layout

\begin_layout Standard

\series bold
Exercise
\series default
: Using various tools you have  learned in this section, you should be able
 to write an equation like:
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
After you have  done it the hard way, give 
\family sans
Insert\SpecialChar \menuseparator
Math\SpecialChar \menuseparator
Cases
\begin_inset space ~
\end_inset

Environment
\family default
 a try.
\end_layout

\end_inset

 
\begin_inset Formula \[
f(x)=\left\{ \begin{array}{cc}
\log_{8}x & x>0\\
0 & x=0\\
\sum_{i=1}^{5}\alpha_{i}+\sqrt{-\frac{1}{x}} & x<0\end{array}\right.\]

\end_inset


\end_layout

\begin_layout Section
More Math Stuff
\end_layout

\begin_layout Standard
LyX's math editor can do a lot more.
 Now you are familiar with the basics, you can refer to the 
\emph on
User's Guide
\emph default
 for tips on how to:
\end_layout

\begin_layout Itemize
Label and number expressions
\end_layout

\begin_layout Itemize
Create multi-line equations
\end_layout

\begin_layout Itemize
Change typefaces, e.
\begin_inset space \thinspace{}
\end_inset

g.
\begin_inset space \space{}
\end_inset

to write bold-face text in an expression.
\end_layout

\begin_layout Itemize
Fine-tune font sizes and spacing within an expression.
 (Do not worry about this until your final draft!)
\end_layout

\begin_layout Itemize
Write macros.
 These are very powerful, because you just define them once at the top of
 the document, and then you can use them throughout the document.
\end_layout

\begin_layout Itemize
Do lots of other things that we have no space for in this Tutorial.
\end_layout

\begin_layout Chapter
Miscellaneous
\end_layout

\begin_layout Section
Other major LyX Features
\end_layout

\begin_layout Standard
We have not gone through all the possible commands in LyX, and we are not
 planning on it.
 As usual, see the 
\emph on
User's Guide
\emph default
 and the 
\emph on
Embedded
\begin_inset space ~
\end_inset

Objects
\emph default
 manual for more information.
 We will just mention a couple more major things LyX can do:
\end_layout

\begin_layout Itemize
LyX has WYSIWYM support for tables.
 Use the 
\family sans
Insert\SpecialChar \menuseparator
Table
\family default
 (toolbar button 
\begin_inset Graphics
        filename ../images/tabular-insert.png
        scale 75
        scaleBeforeRotation

\end_inset

) to get a table.
 Click on the table with the 
\emph on
right button
\emph default
 to get a 
\family sans
Table
\begin_inset space ~
\end_inset

Settings
\family default
 dialog box which allows extensive table editing.
\end_layout

\begin_layout Itemize
LyX also supports including pictures in any format within documents.
 (You guessed it: 
\family sans
Insert\SpecialChar \menuseparator
Graphics
\family default
 (toolbar button 
\begin_inset Graphics
        filename ../images/dialog-show-new-inset_graphics.png
        scale 75
        scaleBeforeRotation

\end_inset

).
 Then browse for the figure file, rotate or scale it, etc.) Tables and figures
 can have captions, and LyX will automatically generate lists of figures
 and/or tables.
\end_layout

\begin_layout Itemize
LyX is heavily configurable.
 Everything from how the LyX window looks to how the output comes out can
 be configured in a number of ways.
 Much configuration is done through 
\family sans
Tools\SpecialChar \menuseparator
Preferences
\family default
.
 For more information on this, check out 
\family sans
Help\SpecialChar \menuseparator
Customization\SpecialChar \@.

\end_layout

\begin_layout Itemize
LyX is being developed by a team of programmers on five continents.
 Therefore, LyX has better support for non-English languages (such as Dutch,
 German, French, Greek, Czech, Turkish, \SpecialChar \ldots{}
) than many word processors.
 Even the right-to-left languages Arabic, Farsi, and Hebrew and the Asian
 languages Chinese Japanese, and Korean are supported.
 You can write documents in other languages and you can also configure LyX
 to show its menus and error messages in other languages.
 
\end_layout

\begin_layout Itemize
The LyX menus feature keybindings.
 This means that you can do 
\family sans
File\SpecialChar \menuseparator
Open
\family default
 by pressing 
\family sans
Alt+F
\family default
 followed by 
\family sans
O
\family default
 or by using the binding which is shown next to it in the menu (Ctrl+O by
 default).
 Keybindings are also configurable.
 For information on this, check out 
\family sans
Help\SpecialChar \menuseparator
Customization\SpecialChar \@.

\end_layout

\begin_layout Itemize
LyX can read LaTeX documents.
 See section
\begin_inset space ~
\end_inset


\begin_inset CommandInset ref
LatexCommand ref
reference "sec:tex2lyx"

\end_inset

.
\end_layout

\begin_layout Itemize
Spell-checking, thesaurus, and word count facilities are available.
\end_layout

\begin_layout Itemize
Generation of indexes and nomenclatures/glossaries is supported.
\end_layout

\begin_layout Section
LyX for LaTeX Users
\begin_inset CommandInset label
LatexCommand label
name "sec:latexusers"

\end_inset


\end_layout

\begin_layout Standard
If you do not know anything about LaTeX, you do not have to read this section.
 Actually, you might want to 
\emph on
learn
\emph default
 about LaTeX, and then read this chapter.
 However, some who begin to use LyX will be familiar with LaTeX.
 If you are such a person, you may be wondering if LyX can really do everything
 LaTeX can do.
 The short answer is that LyX can do pretty much everything LaTeX can do
 in one form or another, and it definitely simplifies most parts of writing
 a LaTeX document.
\end_layout

\begin_layout Standard
Because this is just a tutorial, we are only going to mention things that
 new LyX users will most likely be interested in.
 In the interests of keeping the Tutorial short, we will give only minimal
 information here.
 The 
\emph on
Additional
\begin_inset space ~
\end_inset

Features
\emph default
 and the 
\emph on
Embedded
\begin_inset space ~
\end_inset

Objects
\emph default
 manual have a great deal of information on differences between LyX and
 LaTeX, and how to do various LaTeX tricks in LyX.
\end_layout

\begin_layout Subsection
TeX Mode 
\end_layout

\begin_layout Standard
Anything that you enter in TeX mode will be passed straight to LaTeX, and
 will be displayed in red on the screen.
 You can use TeX commands in LyX by choosing 
\family sans
Insert\SpecialChar \menuseparator
TeX
\begin_inset space ~
\end_inset

Code
\family default
 (toolbar button 
\begin_inset Graphics
        filename ../images/ert-insert.png
        scale 75
        scaleBeforeRotation

\end_inset

).
 This creates a box where everything within it is passed straight to LaTeX.
\end_layout

\begin_layout Standard
In a math formula, TeX mode is handled a bit differently.
 TeX mode is there entered by typing a backslash.
 The backslash is not written out, but anything you type afterwards will
 be in red.
 You exit TeX mode by typing 
\family sans
Space
\family default
 or some other non-alphabetic character, like a number, underscore, caret,
 or parenthesis.
 Once you exit TeX mode, if LyX knows the TeX command you have  typed in,
 it will convert it to WYSIWYM\SpecialChar \@.
 So if you type 
\begin_inset Quotes eld
\end_inset


\family typewriter

\backslash
gamma
\family default

\begin_inset Quotes erd
\end_inset

 in a formula and then press 
\family sans
Space
\family default
, LyX will change the red 
\begin_inset Quotes eld
\end_inset

gamma
\begin_inset Quotes erd
\end_inset

 to a blue 
\begin_inset Quotes eld
\end_inset


\begin_inset Formula $\gamma$
\end_inset


\begin_inset Quotes erd
\end_inset

.
 This will work for almost all, non-complicated math macros.
 This may be faster than using the 
\family sans
Math
\begin_inset space ~
\end_inset

Toolbar
\family default
, and will be especially convenient for experienced LaTeX users.
\end_layout

\begin_layout Standard
As a special case, if you type 
\begin_inset Quotes eld
\end_inset


\family typewriter

\backslash
{
\family default

\begin_inset Quotes erd
\end_inset

 in a formula, the beginning 
\emph on
and
\emph default
 ending braces will be inserted in red while the cursor is placed between
 the braces.
 This makes it more convenient to type those commands which take an argument.
\end_layout

\begin_layout Standard
LyX cannot do absolutely everything that LaTeX can do.
 Some fancy functions are not supported at all, while some work but are
 not WYSIWYM.
 TeX mode allows users to get the full flexibility of LaTeX, while having
 all the convenient features of LyX, like WYSIWYM math, tables, and editing.
 LyX could never support every LaTeX package.
 However, by typing 
\family typewriter

\backslash
usepackage{foo}
\family default
 in the preamble (see section
\begin_inset space ~
\end_inset


\begin_inset CommandInset ref
LatexCommand ref
reference "sec:preamble"

\end_inset

), you can use any package you want — although you will not have WYSIWYM
 support for that package's features.
\end_layout

\begin_layout Subsection
Importing LaTeX Documents — 
\family typewriter
tex2lyx
\family default

\begin_inset CommandInset label
LatexCommand label
name "sec:tex2lyx"

\end_inset


\end_layout

\begin_layout Standard
You can import a LaTeX file into LyX by using the 
\family sans
File\SpecialChar \menuseparator
Import\SpecialChar \menuseparator
LaTeX
\begin_inset space ~
\end_inset

(plain)
\family default
 menu in LyX.
 This will call the program 
\family typewriter
tex2lyx
\family default
 which will create a file foo.lyx from the file foo.tex.
 LyX will then open that file.
 If the translation does not work, you can try calling 
\family typewriter
tex2lyx
\family default
 from the command line, possibly using fancier options.
\end_layout

\begin_layout Standard
Even when the translation does work, 
\family typewriter
tex2lyx
\family default
 may not translate everything, though it does handle most legal LaTeX.
 It will leave things it does not understand in TeX mode; so, after translating
 a file with 
\family typewriter
tex2lyx
\family default
, you can look for the red text and manually edit it to get it right.
\end_layout

\begin_layout Standard

\family typewriter
tex2lyx
\family default
 has its own documentation (manpage), which Unix/Linux users can access
 via the console command 
\family typewriter
man
\begin_inset space ~
\end_inset

tex2lyx
\family default
.
 The manpage describes which LaTeX commands and environments are not supported,
 what bugs you might run into (and how to get around them), and how to use
 the various options.
\end_layout

\begin_layout Standard
It is important to understand that 
\family typewriter
tex2lyx
\family default
 can only translate files whose document class is 
\begin_inset Quotes eld
\end_inset

known
\begin_inset Quotes erd
\end_inset

 to LyX, that is, for which there is a corresponding LyX 
\family sans
layout file
\family default
.
 If there is no layout file, then you will get an error saying that the
 conversion could not be performed.
 So, unless you have a layout for the document class of your LaTeX file,
 
\family typewriter
tex2lyx
\family default
 simply will not know how to translate the LaTeX that it finds there into
 things LyX understands.
 More about layout files and how they are created is explained in detail
 in Chapter 5 of the 
\emph on
Customization
\emph default
 manual.
\end_layout

\begin_layout Subsection
Converting LyX Documents to LaTeX
\end_layout

\begin_layout Standard
You might wish to convert a LyX Document to a LaTeX file.
 For example, a co-worker or co-author who does not have LyX might want
 to read it.
 Select 
\family sans
File\SpecialChar \menuseparator
Export\SpecialChar \menuseparator
LaTeX
\family default
.
 This will create a file 
\family typewriter
whatever.tex
\family default
 from the 
\family typewriter
whatever.lyx
\family default
 file you are editing.
 LyX always creates temporary LaTeX files when viewing or printing files.
\end_layout

\begin_layout Subsection
LaTeX Preamble
\end_layout

\begin_layout Subsubsection
Document Class
\end_layout

\begin_layout Standard
The 
\family sans
Document\SpecialChar \menuseparator
Settings
\family default
 dialog takes care of the document-wide options.
 You can change there the document class, default font size and paper size.
 Document class options but also options for LaTeX packages can be entered
 there in the 
\family sans
Class
\begin_inset space ~
\end_inset

options
\family default
 area.
\end_layout

\begin_layout Subsubsection
Other Preamble Matter
\begin_inset CommandInset label
LatexCommand label
name "sec:preamble"

\end_inset


\end_layout

\begin_layout Standard
If you have special commands to put in the preamble of a LaTeX file, you
 can use them in a LyX document as well.
 Select 
\family sans
Document\SpecialChar \menuseparator
Settings\SpecialChar \menuseparator
LaTeX
\begin_inset space ~
\end_inset

Preamble
\family default
 and type in the dialog window (or from the document settings dialog, depending
 on the frontend).
 Anything you type will (as with TeX mode) be sent directly to LaTeX.
\end_layout

\begin_layout Subsection
BibTeX
\end_layout

\begin_layout Standard
LyX has support for BibTeX, which allows you to build databases of bibliographic
al references to be used in multiple documents.
 Select 
\family sans
Insert\SpecialChar \menuseparator
List
\begin_inset space \thinspace{}
\end_inset

/
\begin_inset space \thinspace{}
\end_inset

TOC\SpecialChar \menuseparator
BibTeX
\begin_inset space ~
\end_inset

Bibliography
\family default
 to include a 
\family typewriter
BibTeX
\family default
 file.
 In the 
\family sans
Database
\family default
 field you load BibTeX files, in the 
\family sans
Style
\family default
 field you can load BibTeX style files.
\end_layout

\begin_layout Standard
After you have done this, you can use citations from any bibliographies
 you are including with 
\family sans
Insert\SpecialChar \menuseparator
Citation
\family default
 (see section
\begin_inset space ~
\end_inset


\begin_inset CommandInset ref
LatexCommand ref
reference "sec:bibliographies"

\end_inset

).
 LyX will take care of running BibTeX.
 The box in the 
\family sans
Citation
\family default
 dialog will show a list of all the references in your 
\family typewriter
BibTeX
\family default
 file.
\end_layout

\begin_layout Section
Errors!
\end_layout

\begin_layout Standard
Sometimes when you try to view a document, there will be errors, things
 that LyX or LaTeX cannot understand.
 When this happens, LyX will open a 
\family sans
LaTeX
\begin_inset space ~
\end_inset

Errors
\family default
 dialog.
 Clicking on individual errors in this dialog will take you to the place
 in the LyX document where the error occurs and also display the detailed
 LaTeX error message.
\end_layout

\end_body
\end_document