Margin is a format posted on Hacker News on 2020-05-11:
The author (Alex Gamburg) in the "Questions" section of margin.love compares Margin to TaskPaper. Gamburg appears to be frustrated with lack of specification of the TaskPaper format, and how TaskPaper is overly-opinionated about structure. In particular, "TaskPaper splits items into
notes" whereas Margin just has "items". Additionally, Margin seems to allow a lot of flexibility in the formatting of the text.