The Establish a Condition Handler routine moves the address of
    a condition handling routine (which can be a user-written or a
    library routine) to longword 0 of the stack frame of the caller
    of LIB$ESTABLISH.

    This routine is not available to native OpenVMS Alpha and I64
    programs but is recognized and handled appropriately by most VSI
    high-level language compilers.

    Format

      LIB$ESTABLISH  new-handler