Usage: nsd help [-ahHV] [-l=<level>] [-o=<output>] [COMMAND] Outputs usage for all registred commands -a, --action-model Output to action model -h, --help Show this help message and exit. -H, --html Output to HTML -l, --header-level=<level> Starting level for HTML header tags in HTML output, the default value is 1. -o, --output=<output> Output file -V, --version Print version information and exit. Commands: site Generates help HTML site