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

    Cancels all pending I/O requests on a specified channel. In
    general, this includes all I/O requests that are queued, as well
    as the request currently in progress.

    Format

      SYS$CANCEL  chan

    C Prototype

      int sys$cancel  (unsigned short int chan);

  Additional Information (explode) :

• Argument