Initially I wanted to figure out how to export my notes. I don't like to use software if I can't export my data. Then I saw strings in the table data mentioning

Initially I wanted to figure out how to export my notes. I don't like to use software if I can't export my data. Then I saw strings in the table data mentioning CRDT and was curious. (I like to take things apart and see how they work.) The data is protobuf encoded, gzipped, and stored in a sqlite database. I wrote some python code to help me work out the protobuf schema. Then I observed how the data changed as I tweaked the notes to assign names to the fields. (After I figured it out, I learned that the protobuf schema was being sent to the client in the web app, but it was a good exercise anyway.) To fill in a couple of details, I took a look at some structures via classdump and the disassembled code in Hopper. (e.g. the point representation for the drawings.)