of editing command in a given context.  When specified, the attribute can contain an [=unordered set of unique space-separated tokens=] that are treated as [=ASCII case-insensitive=].
        </p>
        <p>
            The allowed set of tokens are listed below.  Each token matches the name of an <a data-cite="input-events-1#events-inputevents">Input Type</a>, or is a shortcut that is equivalent to specifying a set tokens.
        </p>
        <p>
            When a token is specified, an user agent MUST 