The "test-all-help" command:

Usage: fossil test-all-help ?OPTIONS?

Show help text for commands and pages.  Useful for proof-reading.
Defaults to just the CLI commands.  Specify --www to see only the
web pages, or --everything to see both commands and pages.

Options:
   -e|--everything   Show all commands and pages.
   -t|--test         Include test- commands
   -w|--www          Show WWW pages.
   -s|--settings     Show settings.
   -h|--html         Transform output to HTML.