Library /sys$common/syshlp/basichelp.hlb Commands, EXIT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  The EXIT command or CTRL/Z clears memory  and  returns  control  to  the
  operating system.  If you change the current program and do not save it,
  BASIC signals a warning message the first time you use EXIT.

  Format

      EXIT