restore-draft

RESTORE-DRAFT   -  continue a message saved with SAVE-DRAFT

Usage:  RESTORE-DRAFT filename

The RESTORE-DRAFT command is used to continue sending a message you
  saved in mid-composition with the SAVE-DRAFT command.  It gets the
  saved message and leaves you at a Send> prompt.

Example showing typical use; jonesletter is the SAVE-DRAFT file:
    MM>restore-draft jonesletter
    Send>text
    [control-k to display existing text]
  If you use emacs, type "edit" at the Send> prompt.

Note: RESTORE-DRAFT does not remove the file.  To keep from filling your
  disk space with unwanted files, use the shell command "rm":
    $ rm filename     OR     MM>!rm filename

For more help, type "help send-mode" and one of these topics:
  save-draft   text   edit   display   shell