Don't discount #2 there. I still make ASCII art when commenting source code. Flow charts! I like to keep documentation as human-readable and editable text.

Don't discount #2 there. I still make ASCII art when commenting source code. Flow charts! I like to keep documentation as human-readable and editable text. (Version control friendly.) ASCII art diagrams can be automatically rendered to an image, too: https://casual-effects.com/markdeep/ https://casual-effects.com/markdeep/