Please feel free to improve titles; we’re a team, there’s no ego in bug title phrasing :)  I did so on at least one bug of yours; hope you didn’t consider it rude.

Are you asking about the docstring of the test module or the reST doc of test.support?  A brief mention of test.script_helper (and possibly the other undocumented test helpers) could be added in either or both IMO, but just to let people know about about the file and go read it or pydoc it; we don’t want to spend too much time documenting private modules with no compat constraints.