&#62; inability to use any sort of ASCII art<p>That actually makes me support the idea of using proportional fonts even more.<p>- If something's that complex you need a diagram to support it, that probably doesn't belong in your code - you should maintain documentation in documentation format, and doc updates shouldn't mean new code revisions. Throw a URL to the documentation in as the comment.<p>- Diagrams could be illustrated much better with an actual diagram rather than an ASCII visualization of one.