The "help" command:
Usage: fossil help [OPTIONS] [TOPIC] [SUBCOMMAND]
Display information on how to use TOPIC, which may be a command, webpage, or setting. Webpage names begin with "/". If TOPIC is omitted, a list of topics is returned. If there is an extra argument after TOPIC, it is the name of a subcommand, in which case only the help text for that one subcommand is shown.
The following options can be used when TOPIC is omitted:
- -a|--all
 - List both common and auxiliary commands
 - -e|--everything
 - List all help on all topics
 - -f|--full
 - List full set of commands (including auxiliary and unsupported "test" commands), options, settings, and web pages
 - -o|--options
 - List command-line options common to all commands
 - -s|--setting
 - List setting names
 - -t|--test
 - List unsupported "test" commands
 - -v|--verbose
 - List both names and help text
 - -x|--aux
 - List only auxiliary commands
 - -w|--www
 - List all web pages
 
These options can be used when TOPIC is present:
- -c|--commands
 - Restrict TOPIC search to commands
 - -h|--html
 - Format output as HTML rather than plain text
 - -o|--options
 - Show command-line options for TOPIC
 - --raw
 - Output raw, unformatted help text
 - -u|--usage
 - Show a succinct usage summary, not full help text