'Handles lines that describe page info. Add the apporpriate info in the
token to the self.__margin_dict dicitonary.'

def __margin_func(self, line):

    info = line[6:16]
    changed = self.__margin_dict.get(info)
    if (changed is None):
        print 'woops!'
    else:
        self.__page[changed] = line[20:(-1)]
