you're editing, you may
find that you are using a command sequence frequently, or you may occasionally
use a very complex command sequence. To save yourself keystrokes — or the time
it takes to remember the sequence — assign the sequence to an unused key by
map command acts a lot like ab (Section
17.23) except that you define a macro for command mode instead of
text-input mode. The
map! command works
during text-input mode; see the following list.
Define x as a sequence of editing commands.
Disable the x definition.
List the characters ...