If you are reading this, you probably just downloaded the jQuery.mmenu-plugin and are eager to learn more about it.
If so, these demo pages could not be more helpfull. They include examples, color themes and a demo on how to implement it with jQuery Mobile.
This page has the mmenu-widescreen.css file included. Therefor, if your screen is wider than 900px, the menu will always be opened.
If not, click the menu-button in the header to open the menu.
Debugging
When the plugin tries to fix an issue with the HTML or an option, it logs debug information to a public method. To show this information, override this public method:
$.fn.mmenu.debug = function( msg ) {
alert( msg );
};