def usage(err=''):
    """  Prints the Usage() statement for the program    """
    m = '%s\n' %err
    m += '  Default usage is to seach the Scan library tree for your branch.\n'
    m += ' '
    m += '    walklib  \n'
    m += '      or\n'
    m += '    walklib -w tech_rules \n'
    m += '      or\n'
    return m