VMS Help System Services, $DASSGN  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Deassigns (releases) an I/O channel previously acquired using the
    Assign I/O Channel ($ASSIGN) service.

    Format

      SYS$DASSGN  chan

    C Prototype

      int sys$dassgn  (unsigned short int chan);

  Additional Information (explode) :

• Argument