Specify if the Twisty Toggle section will use a <div> or a <span> tag. Note that if the contents contains block elements such as div, mode should be div as well to create valid HTML markup.
optional, defaults to <div>
If "on", the Twisty state is remembered the next time the page is shown. If "off", the stored setting will be cleared. Note: when used, think carefully about a unique name (id) for the Twisty, otherwise the cookie that is set might affect other Twisties with the same name. Also note that only interaction is stored, not the state of the Twisty when left unclicked.
optional, no default
"hide" or "show"
Initial state of the Twisty; this will override any setting stored in a cookie (see remember).