[contingencies]

Finer grained changes and git. When reading online or books, notes go in git. If you don't have time to type and just want to squiggle, try a wacom tablet and inkscape. If you have time, markdown all the things. Learn tools such as graphviz[0], mscgen[1], mermaidjs[2], syntrax[3] and wavedrom[4] to assist with clear communication.

[0] https://www.graphviz.org/

[1] http://www.mcternan.co.uk/mscgen/

[2] https://mermaidjs.github.io/

[3] https://kevinpt.github.io/syntrax/

[4] http://wavedrom.com/