I like this style. In a project I worked on we had CI reject any FIXMEs outright and any TODOs that weren't accompanied by an issue ticket[^1], so the hierarchy

I like this style. In a project I worked on we had CI reject any FIXMEs outright and any TODOs that weren't accompanied by an issue ticket[^1], so the hierarchy would be FIXME: I am leaving a note to myself to not get distracted, but this code is not considered finished/mergeable until it's resolved XXX: this needs fixing soon, but the code will still be functional without it TODO: this needs revisiting but the code is perfectly useable without it - a lower priority XXX NOTE: this does something unusual and you need to bear in mind while working on this code [^1]: the value of doing (or not doing) this is a subject that has already been extensively rehashed in sibling comments