in rst/options_node.py [0:0]
def setup(app):
app.add_directive('indigo_option', OptionsDirective)
app.add_directive('indigo_options_table', OptionsTableDirective)
app.add_node(OptionsList)
app.add_node(OptionInfo,
html=(visit_optioninfo_node, depart_optioninfo_node),
latex=(visit_optioninfo_node, depart_optioninfo_node),
text=(visit_optioninfo_node, depart_optioninfo_node))
app.connect('doctree-resolved', process_indigo_option_nodes)
app.connect('env-purge-doc', purge_indigo_options)
app.add_role('optref', indigo_option_role)