It wasn't hacked, people just abused the option to comment and add suggestions. I had to make the document read-only to stop these immature trolls. Unfortunately there doesn't seem to be a setting in Google docs to allow only non-anonymous comments (and to revoke permission to comment to abusing accounts).
Since I can't make a suggested edit, I'll make my suggestion here: please explain CHF as Swiss francs; unlike most other countries, the two letter code is not enough to guess the country name. Looking it up, it seems to be the country's name in Latin, which led me into a Wikipedia rabbit hole that ended say the Spanish Reconquista before I realized what I was doing.
The PDF standard is another standard that is locked up, despite the earlier versions being fully open before Adobe gave it up.
