Your LOGIN.COM file can define an EDIT/TECO command with preset
  qualifiers if desired.  The qualifiers /NOCOMMAND, /NOCREATE, and
  /NOMEMORY are always recognized so that they can be preset at command
  definition time.  To disable all TECO start up actions you would use

         TECO == "EDIT/TECO/NOCOMMAND/NOCREATE/NOMEMORY"

  To disable only TECO's memory you would use

         TECO == "EDIT/TECO/NOMEMORY"

  Etc.