As noted in #15346, several modules are not documented except in the code.  Having just had to do that for #25173, I would like there to be a page for commondialog.Dialog and its subclasses, messagebox.Message and colorchooser.Chooser, and the associated module functions.  I hope to submit a .rst file for review if no one else does so.  My plan is to copy from web pages produced by the pydoc server, add markup, and edit.