Library /sys$common/syshlp/PCA$HELP.HLB

    PCA Command

    Command keyword for the commands UNDEFINE/COMMAND and
    UNDEFINE/KEY. Deletes command definitions established with the
    DEFINE/COMMAND command, and deletes key definitions established
    with the DEFINE/KEY command.

    Format

      UNDEFINE/COMMAND  parameters

      UNDEFINE/KEY  parameters

Additional Information: explode extract

Parameters
/COMMAND
/KEY