+ Allows one to perform a batch export of the LyX file that is
+ opened to the specified destination file <dest> and format
+ <format>. For example, to create a PDF of a LyX document,
+ you can run:
+ lyx --export-to pdf /path/to/dest.pdf /path/to/source.lyx
+ See the manual page for details.
+
+ This functionality is also available via a new menu voice
+ Export->Export As..., that pops up a dialog allowing one to
+ choose the export format, as well as the destination pathname.
+ Also, it is available via the mini-buffer (or the -x switch)
+ through a proper new LFUN (see below).
+
+- The Advanced Find and Replace feature now supports cancel of a
+ long search operation by hitting the ESC key.
+
+- The format pdf aka "PDF (ps2pdf)" was split in two formats: pdf aka
+ "PDF (ps2pdf)" and pdf6 aka "PDF (graphics)". pdf6 is used for PDF
+ files included as graphics. Custom external templates and converters
+ might need to be adjusted. The format split was needed since otherwise
+ an odt->pdf converter which is intended for included graphics only
+ did interfere with document export via ps2pdf.
+
+- The support for ArmTeX (a special typesetting engine for Armenian)
+ was removed. Writing text in Armenian is now possible in a native
+ way using XeTeX.
+
+
+The following pref variables were added in 2.1:
+
+- \\close_buffer_with_last_view [yes|no|ask]
+ When the user closes the last view on a document, close the
+ document as well ("yes"), or hide the document ("no"), or ask
+ the user ("ask").
+
+- \\completion_minlength
+ Defines the minimal length of a word to be added to the list of
+ words for text completion.
+
+- \\default_length_unit
+ Defines the default length unit: 2 for centimers, 6 for inches.