| optparse-package | Command line option parser | 
| add_option | Functions to enable our OptionParser to recognize specific command line options. | 
| IndentedHelpFormatter | Builtin help text formatters | 
| make_option | Functions to enable our OptionParser to recognize specific command line options. | 
| OptionParser | A function to create an instance of a parser object | 
| OptionParser-class | Option Parser | 
| OptionParserOption | Class to hold information about command-line options | 
| OptionParserOption-class | Class to hold information about command-line options | 
| optparse | Command line option parser | 
| parse_args | Parse command line options. | 
| parse_args2 | Parse command line options. | 
| print_help | Printing an usage message from an OptionParser object | 
| TitledHelpFormatter | Builtin help text formatters |