Usage: xo [options] format [fields]
    --close <path>        Close tags for the given path
    --close-instance <name> Close an open instance name
    --close-list <name>   Close an open list name
    --continuation OR -C  Output belongs on same line as previous output
    --depth <num>         Set the depth for pretty printing
    --help                Display this help text
    --html OR -H          Generate HTML output
    --instance OR -I <name> Wrap in an instance of the given name
    --json OR -J          Generate JSON output
    --leading-xpath <path> OR -l <path> Add a prefix to generated XPaths (HTML)
    --not-first           Indicate this object is not the first (JSON)
    --open <path>         Open tags for the given path
    --open-instance <name> Open an instance given by name
    --open-list <name>   Open a list given by name
    --option <opts> -or -O <opts>  Give formatting options
    --pretty OR -p        Make 'pretty' output (add indent, newlines)
    --style <style> OR -s <style>  Generate given style (xml, json, text, html)
    --text OR -T          Generate text output (the default style)
    --top-wrap            Generate a top-level object wrapper (JSON)
    --version             Display version information
    --warn OR -W          Display warnings in text on stderr
    --warn-xml            Display warnings in xml on stdout
    --wrap <path>         Wrap output in a set of containers
    --xml OR -X           Generate XML output
    --xpath               Add XPath data to HTML output