ttrpg but it has a "source code" where it just has a bunch of additional, plain language thoughts after every section about intent n' shit

ttrpg but it has a "source code" where it just has a bunch of additional, plain language thoughts after every section about intent n' shit
Ok, but literally just write your games in HTML and include HTML <!--//--> comments and actually do this.
Check this out:
<!---Here's a markdown comment. View Source to see it!--->
e: apparently it gets stripped, oops. It's that though