Custom toolbar with Summernote

How do I know which functions can be enabled for the toolbar of summernote, and how to do it?

In the API docs all I can find is "toolbar : Array (optional)" without further explanation.

I've managed to enable some features thanks to one of the examples, but how can I also enable: code, indent and outdent?

$(".summernote").summernote({
    styleWithSpan: false,
    toolbar: [
        ['style', ['bold', 'italic', 'underline', 'clear']],
        ['color', ['color']],
        ['para', ['ul', 'ol']]
    ]
});

in settings.js You have basic setting (with all features on):

toolbar: [
    ['style', ['style']],
    ['font', ['bold', 'italic', 'underline', 'clear']],
    ['fontname', ['fontname']],
    ['color', ['color']],
    ['para', ['ul', 'ol', 'paragraph']],
    ['height', ['height']],
    ['table', ['table']],
    ['insert', ['link', 'picture', 'hr']],
    ['view', ['fullscreen', 'codeview']],
    ['help', ['help']]
  ],

indentation is in 'paragraph'