than 'fast-but-imprecise-scrolling' and 'jit-lock-defer-time'.
It is not enabled by default.
+---
*** Obsolete aliases are no longer hidden from command completion.
Completion of command names now considers obsolete aliases as
candidates, if they were marked obsolete in the current major version
of Emacs. Invoking a command via an obsolete alias now mentions the
obsolescence fact and shows the new name of the command.
++++
*** Support for '(box . SIZE)' 'cursor-type'.
By default, 'box' cursor always has a filled box shape. But if you
specify 'cursor-type' to be '(box . SIZE)', the cursor becomes a hollow