Agreed. I gradually morph that to-do list into pseudocode and that into code, sometimes in a comment block. When in the code and need to jump around different

Agreed. I gradually morph that to-do list into pseudocode and that into code, sometimes in a comment block. When in the code and need to jump around different thoughts all in progress, I also tend to put "%%" and/or "%%$%" as a marker for "come back to this". (It helps that it doesn't compile, and works across platforms or different editors, so I don't have to change the habit over time.)