Here's various codebase conventions that don't have dedicated pages:
URLs in code should be annotated with a
//doc:urldirective comment. See the the
internal/cmd/mdbook-injecturlscommand for documentation on how the preprocessor works. The list of keywords isn't an allowlist, so an invocation like the following should list the ones actually used in the documentation using a command like
git grep injecturls -- :/docs/*.md.