Oh, that
Basically our work process is, the writers work collaboratively on a google document, with one guy as main writer, and everyone else doing edits (checking for typos/grammar errors since a couple of us are second language speakers, sometimes making tweaks to some parts of the scene that don't get the tone right, if the main writer has difficulty with one scene he'll leave a gap for the rest to fill later, etc)
Once the script is finished, I take it and start formatting it for Renpy- indenting as necessary, adding logic if necessary, fixing syntax issues, and in general coding in stuff like changing backgrounds, showing and animating characters, etc.
Sometimes the writers will leave comments like that and for the most part I keep them there because they're amusing when people codedive and find them, I guess.