!Important Changes in LyX 2.4.0


!!Interface changes

- It is now possible to cancel background export processes. A menu entry
  to do so will appear on the Document menu when such a process is underway.
  The LFUN for this is export-cancel.


!!Documents compilation process and images conversion



!!!The following pref variables were added in 2.4:



!!!The following pref variables were changed in 2.4:



!!!The following pref variables are obsoleted in 2.4:

* \font_encoding
  The font encoding is now automatically set depending on the document
  fonts and languages.

* \use_qimage
  This is no longer necessary due to the rewrite of the painter.


!!!The following new LyX functions have been introduced in 2.4:

LFUN_EXPORT_CANCEL: Used to cancel background export processes.


!!!The following LyX functions have been changed in 2.4:

- LFUN_SET_GRAPHICS_GROUP was renamed into LFUN_GRAPHICS_SET_GROUP.



!!!The following LyX documents have been moved in 2.4:



!!!The following new folders have been added to the LyX directory



!!!The following preferences files have been removed from the tarball in 2.4:



!!!The following metadata files have been added to the tarball in 2.4:



!!Changes with respect to external programs and libraries in 2.4:



!!Known issues in version 2.4.0

* See http://www.lyx.org/trac/wiki/BugTrackerHome


!!Caveats when upgrading from earlier versions to 2.4.x


!! If upgrading from a LyX version before 2.3.0

* Please additionally see the release notes from the versions in-between:
  https://wiki.lyx.org/LyX/ReleaseNotes

* Several ttf fonts (esint10.ttf, stmary10.ttf, wasy10.ttf) were changed
  to reflect the fact that newer Qt libraries do not support displaying certain
  codepoints anymore (bug #8493, #10161). 
  Distribution packagers need to repack those font files in case they are
  delivering the fonts as a separated package dependent from core LyX.