Issue #5438 has been updated by Eric Hodel. I modified your patch to use bullet lists and removed the top-most Exception bullet. I also added notes for the default require/rescue subclasses. ---------------------------------------- Bug #5438: [PATCH] Add exception hierarchy in Exception class documentation. http://redmine.ruby-lang.org/issues/5438 Author: Sylvain Daubert Status: Open Priority: Normal Assignee: Eric Hodel Category: DOC Target version: ruby -v: 1.9.2p290 [PATCH] * error.c: Add exception hierarchy in Exception class documentation. -- http://redmine.ruby-lang.org