Documentation can end up sucking up a large amount of your time. It's also very easy for documentation to get out of date. It's therefore useful to tie your do

Documentation can end up sucking up a large amount of your time. It's also very easy for documentation to get out of date. It's therefore useful to tie your documentation to the code itself: 1. Generate documentation from the code where appropriate. 2. Automatically test examples in your documentation each time you regenerate it.