When/where are the submodule doc strings printed?

[The9Cat]

When I document a submodule using def_submodule("name1", "docstring1") , and so forth, I notice that help on the module prints the module doc string and my list of submodules (name1, name2, name3, etc.) but no submodule docstrings.

I would have thought that those docstrings would have appeared with the submodule list. If I ask for help(module.name1), I do not get the docstring either.

Where is that info printed? Obviously, this is not a big deal. But is there some configuration I need to do? Just trying to make this the best experience for any users and want to understand this. Thanks...