+@item
+The following options are now changed as a @code{-d} sub-option:
+@code{--backend}, @code{--safe}, @code{--preview} and
+@code{--no-pages} (which became @code{-dno-print-pages}).
+
+@item
+Improved testing procedure now catch changes in CPU and memory
+performance, page layout, MIDI results and warnings. This helps to
+reduce the number of regression errors during development, resulting
+in more stable releases.
+
+See @uref{INSTALL.html#testing} for more information.
+@item
+Nested properties, such as @code{details} in @code{Slur}, can be
+reverted as well. The syntax for this is
+
+@example
+\revert Slur #'(details closeness-factor)
+@end example
+
+@item