00001012054200 API: Update a zettel
00001012000000 API
00001012920000 Endpoints used by the API
00001012921200 API: Encoding of Zettel Access Rights
00001012053300 API: Retrieve metadata and content of an existing zettel
00001012053200 API: Create a new zettel
00001006050000 Zettel identifier
00001006020000 Supported Metadata Keys
00001006010000 Syntax of Metadata
00001006000000 Layout of a Zettel
00001012930500 Syntax of Symbolic Expressions