Support for optional defaults (RT bug #61438, patch from Paolo Medeo)
Extended the grammar of recognized POD headers for required and optional arguments: [STANDARD|STD|PROGRAM|SCRIPT|CLI|COMMAND[-| ]LINE] [REQUIRED|MANDATORY] [PARAM|PARAMETER|ARG|ARGUMENT][S] [STANDARD|STD|PROGRAM|SCRIPT|CLI|COMMAND[-| ]LINE] OPTION[AL|S] [PARAM|PARAMETER|ARG|ARGUMENT][S]
Usage error message now mentions the --man option in addition to --help