Contributing to Leo
There are many ways to contribute to Leo. Leo's devs appreciate all of them.
The best way to get started is by asking for help in Leo's forum.
Documentation
Clicking the Lion on Leo's Home page will take you to the Table of Contents for Leo's documentation.
Source Code
LeoPyRef.leo, in leo-editor/leo/core, contains all of Leo's source code as a Leo outline. Studying LeoPyRef.leo is the best way to understand Leo's code.
Bug reports
Please file bug reports here.