Reference

The exact tables. Every page here except this one is generated from the tuimark binary itself (its --help and the catalogs behind tuimark agents), so it matches the runtime you install.

Page	What it lists
CLI	Every command and flag, and the exit codes
Tags and attributes	The closed set of tags and the attributes each one takes, in version="1" and version="2" documents
CSS properties	Every TCSS property and its values
Key tokens	The names a <bind keys="…"> row accepts
Diagnostic codes	Every V…, L…, and B… code and when it is reported

The same information, in the compact form an agent reads, is one command away:

tuimark agents

For how the pieces fit together, start with the guide: The .tui language, TCSS, Layout.