def showInvLines(rh):
    """
    Produce help output related to command synopsis

    Input:
       Request Handle
    """
    if rh.subfunction != '':
        rh.printLn('N', 'Usage:')
    rh.printLn('N', '  python ' + rh.cmdName + ' GetHost ' + 'diskpoolnames')
    rh.printLn('N', '  python ' + rh.cmdName + ' GetHost ' +
        'diskpoolspace <poolName>')
    rh.printLn('N', '  python ' + rh.cmdName + ' GetHost fcpdevices')
    rh.printLn('N', '  python ' + rh.cmdName + ' GetHost general')
    rh.printLn('N', '  python ' + rh.cmdName + ' GetHost help')
    rh.printLn('N', '  python ' + rh.cmdName + ' GetHost version')
    return
