I come from a programming background. With that being said I like to keep a list of notes of what I am doing as it relates to a file I may be working on at any given time. I'm finding that a single project can consist of many CTA files and secondary files as well.  As such I find it difficult sometimes to remember exactly where or what I was doing in a particular file. It would be nice, IMO, to be able to comment along the way while working in case a new idea or a thought about a file or its support files needs to be notated.