I try not to. Failing that, in a text file named notes.txt. Failing that, in comments in the makefile, in the code. Failing that, in a commit comment. Failing t

I try not to. Failing that, in a text file named notes.txt. Failing that, in comments in the makefile, in the code. Failing that, in a commit comment. Failing that, in a journal of some kind to describe what failed.