Deletes all logical names with the specified name at the
    specified access mode or outer access mode, or it deletes all
    the logical names with the specified access mode or outer access
    mode in a specified table.

    On Alpha and Integrity server systems, this service accepts 64-
    bit addresses.

    Format

      SYS$DELLNM  tabnam ,[lognam] ,[acmode]

    C Prototype

      int sys$dellnm  (void *tabnam, void *lognam, unsigned char

                      *acmode);