*** `apropos-library' describes the elements defined in a given library.
*** Set `apropos-compact-layout' is you want a more compact (but wider) layout.
++++
** Archive Mode has basic support to browse Rar archives.
** BibTeX mode
set a variable's `safe-local-variable' and `risky-local-variable' property.
** Diff mode
-
++++
*** diff-refine-hunk highlights word-level details of changes in a diff hunk.
It's used automatically as you move through hunks, see
diff-auto-refine-mode. It is bound to `C-c C-b'.
-
++++
*** diff-add-change-log-entries-other-window iterates through the diff
buffer and tries to create ChangeLog entries for each change.
It is bound to `C-x 4 A'.
-
++++
*** The new function `diff-show-trailing-whitespaces' shows
trailing whitespace problems in the modified lines of a diff buffer.