+\end_inset
+</cell>
+<cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+didot (72 dd
+\begin_inset Formula $\approx$
+\end_inset
+
+ 37.6
+\begin_inset Formula $\,$
+\end_inset
+
+mm)
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topline="true">
+<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+cc
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+cicero (1cc = 12 dd)
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topline="true">
+<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+Scale%
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+% of original image width
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topline="true">
+<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+text%
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+% of text width
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topline="true">
+<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+col%
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+% of column width
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topline="true">
+<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+page%
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+% of paper width
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topline="true">
+<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+line%
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+% of line width
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topline="true">
+<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+theight%
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+% of text height
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topline="true">
+<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+pheight%
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+% of paper height
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topline="true">
+<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+ex
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+height of letter
+\emph on
+x
+\emph default
+ in current font
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topline="true">
+<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+em
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+width of letter
+\emph on
+M
+\emph default
+ in current font
+\end_layout
+
+\end_inset
+</cell>
+</row>
+<row topline="true" bottomline="true">
+<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+mu
+\end_layout
+
+\end_inset
+</cell>
+<cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none">
+\begin_inset Text
+
+\begin_layout Standard
+math unit (1 mu = 1/18 em)
+\end_layout
+
+\end_inset
+</cell>
+</row>
+</lyxtabular>
+
+\end_inset
+
+
+\end_layout
+
+\end_inset
+
+
+\end_layout
+
+\begin_layout Standard
+To view the figure on the LyX screen, however, some additional work is required
+ because neither the XForms nor the Qt GUI libraries can load PostScript®
+ figures themselves.
+ The XForms library can load figures in the following, widely used graphics
+ formats:
+\family typewriter
+bmp
+\family default
+,
+\family typewriter
+gif
+\family default
+,
+\family typewriter
+jpeg
+\family default
+,
+\family typewriter
+pbm
+\family default
+,
+\family typewriter
+pgm
+\family default
+,
+\family typewriter
+ppm
+\family default
+,
+\family typewriter
+tif
+\family default
+ and
+\family typewriter
+xbm
+\family default
+ whilst the Qt library can also handle
+\family typewriter
+mng
+\family default
+,
+\family typewriter
+png
+\family default
+ and
+\family typewriter
+xpm
+\family default
+ format figures.
+ Thus, LyX must initiate a conversion from Encapsulated PostScript® to a
+ loadable graphics format.
+\end_layout
+
+\begin_layout Standard
+It does this using the powerful, configurable converters mechanism exposed
+ in the
+\family sans
+Converters
+\family default
+ section of the
+\family sans
+\bar under
+E
+\bar default
+dit
+\family default
+\SpecialChar \menuseparator
+
+\family sans
+\bar under
+P
+\bar default
+references
+\family default
+ dialog.
+ If LyX cannot create a conversion path (which might have many steps) from
+ Encapsulated PostScript® to one of the loadable formats listed above, then
+ it defaults to the use of ImageMagick's
+\family typewriter
+convert
+\family default
+ utility.
+ If, after all that, LyX
+\emph on
+still
+\emph default
+ cannot load the figure, then it'll tell you so with a message
+\begin_inset Quotes eld
+\end_inset
+
+Error converting to loadable format
+\begin_inset Quotes erd
+\end_inset
+
+ in place of an on-screen view of your figure.
+ If you're presented with such a message, then you'll need to augment the
+ list of known converters.
+\end_layout
+
+\begin_layout Standard
+This strategy is used both to generate on-screen views of your image and
+ when generating the final document.
+ In the latter case, the LaTeX compiler must be supplied with graphics files
+ in PostScript® format.
+ Similarly the PDFLaTeX compiler requires files in
+\family typewriter
+ pdf
+\family default
+,
+\family typewriter
+png
+\family default
+ or
+\family typewriter
+jpeg
+\family default
+ format.
+ LyX will handle the necessary conversions behind the scenes.
+\end_layout
+
+\begin_layout Subsection
+Figure Floats
+\end_layout
+
+\begin_layout Subsubsection
+Using Figure Floats
+\begin_inset LatexCommand \label{sec:figurefloats}
+
+\end_inset
+
+
+\end_layout
+
+\begin_layout Standard
+The problem with inserting figures straight into your text is that they
+ might make the pagination of your document extremely awkward.
+ To suit the LyX mentality of automating such processes, you might find
+ it preferable to use
+\family sans
+Figure\InsetSpace ~
+Floats
+\family default
+, which LyX (actually, LaTeX) is free to move about your document as it
+ deems necessary for a good fit.
+ In return, LyX automates the listing of these figures and allows you to
+ place a caption on them, using the
+\family sans
+Caption
+\family default
+ environment explained in Section\InsetSpace ~
+
+\begin_inset LatexCommand \ref{sec:captionlayout}
+
+\end_inset
+
+.
+\end_layout
+
+\begin_layout Standard
+To place a
+\family sans
+Figure\InsetSpace ~
+Float
+\family default
+ simply select
+\family sans
+\bar under
+I
+\bar default
+nsert\SpecialChar \menuseparator
+Flo
+\bar under
+a
+\bar default
+t\SpecialChar \menuseparator
+Figure
+\family default
+from the menu bar.
+ You will get a float without a figure in it; use the toolbar icon described
+ above to insert the actual figure.
+\end_layout
+
+\begin_layout Standard
+\begin_inset Float figure
+placement htbp
+wide false
+sideways false
+status open
+
+\begin_layout Caption
+\begin_inset LatexCommand \label{fig:escher}
+
+\end_inset
+
+M.C.
+ Escher on acid.
+\end_layout
+
+\begin_layout Standard
+\align center
+\begin_inset Graphics
+ filename escher-lsd.eps
+ display color
+ rotateOrigin center
+
+\end_inset
+
+
+\end_layout
+
+\end_inset
+
+
+\end_layout
+
+\begin_layout Standard
+\begin_inset Float figure
+placement htbp
+wide false
+sideways false
+status open
+
+\begin_layout Standard
+\align center
+\begin_inset Graphics
+ filename platypus.eps
+ display color
+ rotateOrigin center
+
+\end_inset
+
+
+\end_layout
+
+\begin_layout Caption
+\begin_inset LatexCommand \label{fig:kill-plat}
+
+\end_inset
+
+A severely distorted platypus in a float.
+\end_layout
+
+\end_inset
+
+
+\end_layout
+
+\begin_layout Standard
+It seems simple, but there is subtlety involved in the placement of the
+ caption.
+ If you prefer your caption to appear below the figure, then you must press
+ return when the cursor is at the very start of the caption, and insert
+ the figure in the new paragraph created above the caption; or you can delete
+ the caption and recreate it by selecting the
+\family sans
+Caption
+\family default
+environment after the figure has been inserted.
+ This is what we did for figure
+\begin_inset LatexCommand \ref{fig:kill-plat}
+
+\end_inset
+
+.
+ If the cursor is in a paragraph after the caption when you insert the
+\family sans
+Figure
+\family default
+ then it will be inserted after the caption, as was the case for
+\begin_inset LatexCommand \ref{fig:escher}
+
+\end_inset
+
+.
+ It is preferred to use one
+\family sans
+Figure
+\family default
+ per
+\family sans
+Float
+\family default
+.
+ This allows LyX [actually LaTeX] to best position each figure.
+\end_layout
+
+\begin_layout Standard
+Right-clicking on a float opens a dialog where you can alter the placement
+ options that LaTeX uses for positioning the float (see
+\begin_inset LatexCommand \ref{sec:float-locn}
+
+\end_inset
+
+).
+
+\family sans
+Span\InsetSpace ~
+columns
+\family default
+ is only useful for two-column documents: if you select it, the float will
+ span across both columns on the page instead of being confined to just
+ one.
+\end_layout
+
+\begin_layout Standard
+This figure also shows how we place a label and create a cross-reference
+ to it; as you would expect from reading section
+\begin_inset LatexCommand \ref{sec:crossref}
+
+\end_inset
+
+ you can simply insert a
+\family sans
+\bar under
+L
+\bar default
+abel
+\family default
+ in the caption and refer to it using a
+\family sans
+\bar under
+C
+\bar default
+ross\InsetSpace ~
+Reference
+\family default
+ as normal.
+ It is especially important to use these with figure floats, rather than
+ using vague references to
+\begin_inset Quotes eld
+\end_inset
+
+the above figure,
+\begin_inset Quotes erd
+\end_inset
+
+ as LaTeX will reposition your floats for you in the final document; it
+ might not be
+\begin_inset Quotes eld
+\end_inset
+
+above
+\begin_inset Quotes erd
+\end_inset
+
+ at all.