Package golf is the game realm: it keeps the holes, the players' rounds, the records and the rankings. Every hole is data (a GG1 string, p/…/course), never code: golf decodes it and plays it with p/…/physics. The owner publishes the course's holes into slots of a cup ("garden/7"), each publish a new version ("garden/7/v2"); once the owner opens publishing, anyone can publish a community hole ("<address>/<slug>/v1", PublishMine), playable and recorded but outside the course and its ranking.
Reads take a version's id or its alias ("garden/7", "<address>/<slug>"), its current version. Writes take the exact id only, as HoleState or Holes gave it: a round cannot be replayed on a version it was not played on.
Who can change what (in full on the hub page): the owner holds one power, the course itself: its holes (Publish), what the lists show (Hide), and whether anyone can publish (SetPublishing).
Versions is every version of an alias, oldest first (the newest pageMax if there are more): its id, number, the height it was published at, by whom, its data's sha256, its note, and the version that took its place. slot is the alias, "" (and no versions) for one that has none.
gnokey query vm/qeval -remote "https://rpc.onyx.testnets.gno.land" -data "gno.land/r/nym-alexiscolin000/gnogolf/golf.Versions()"