https://www.markdownguide.org/extended-syntax/
This has most of the extended syntax, including footnotes[^1]. I use the syntax highlighting quite often, and a few markdown editors/previewers support mermaid.js which is pretty cool if you need a simple diagram and you don't want to mess around with a more complex app.
[^1]: If you are talking about Lemmy formatting specifically, I don't think it's feature complete yet, but it does support some things that aren't documented
A milk cow can generate a 1000 litres of milk a month, it seems reasonable that you might have one or two more cows than you need as a buffer for a dairy farm, and for a larger company with multiple farms, 1000 litres isn't even a rounding error. Canada produced over 800,000,000 litres of milk in May alone see Stats Canada. I believe supply management regulations also force the destruction of overproduction as well. related Question Period QA. Based on this, it's even worse than 1000's of litres.