'return list of options that can be changed at any time (not only be
initialized), however the list might not be entirely up to date. The
string \' #v \' in the default value indicates a \'versatile\' option
that can be changed any time.'

@staticmethod
def versatileOptions():

    return tuple(sorted((i[0] for i in list(Options.defaults().items()) if (i[1].find('    #v    ') > 0))))
