generated by recording or by automatic preferences saving will contain full names, instead of short names. This is highly desirable if you are going to manually editing the macro, but it can slow down considerably the parsing of the commands.
If you call this command with no arguments, it will toggle the flag. If you
specify 0 or 1, the flag will be set to false or true, respectively. A lower
v' will appear on the status bar if the flag is true.
The only reason to use this flag is when recording a macro that will be played a great number of times. Automatic preferences files are too short to be an issue with respect to execution timing.