you can leave comments in your code like
// TODO: fix the blah blah whatever etc
but i don't recommend it. one of the issues is that every time you write one, you have to think of something to put after the 'TODO:' part which breaks your flow. instead i recommend writing something like these:
// ugh!!!!!
// FOUL
// Disgusting
// im going to be sick
@jk this is how billion dollar industries are formed
@mavica_again recently i've been piling hacks on top of hacks in a way that's starting to strain my ability to even describe the ways they're bad, since in order to explain why each hack is a hack, it sort of requires you pretend the hack that it's built on top of is ok, when its really not