SAVE-INIT  -  save customizations

Usage:  SAVE-INIT

The SAVE-INIT command is used to keep customizations for future use in
  a file called .mminit, which MM reads at startup.  You can customize
  MM using the SET and DEFINE commands, but the effects of SET and
  DEFINE last only for the one MM session unless you use SAVE-INIT.
  One SAVE-INIT will save all current settings.

Examples:
    MM>define pals abc1,def6	#defines an alias
    MM>set expunge-on-bye no	#changes a customization variable
    MM>save-init		#saves both the above things in .mminit

For more help type "help" and one of these topics:
  set   define   show   customization
