hop of those help? The 'source' is just that ... it is the code returned from the server. In most cases to see DOM changes made after loading you will need to look at the code in Firebug or Chrome Inspector.
slidify layouts: title-only, title-and-body, title-and-two-cols, title caption, and blank
I wish this help you Slide layouts are mustache templates that can make use of objects returned by the parser. You can find a list of objects returned by the parser here. Coming to the question raised, here is how one would go about building the layouts for the slides.