'Usage: help <command> - provide some information for the command'

def help(self, command):

    for (i, v) in ByPy.__dict__.items():
        if (callable(v) and v.__doc__ and (v.__name__ == command)):
            help = v.__doc__.strip()
            pos = help.find(const.HelpMarker)
            if (pos != (-1)):
                pr((u'Usage:    ' + help[(pos + len(const.HelpMarker)):].strip()))
