A typical slideshow is like this one: http://sorgalla.com/projects/jcarousel/examples/static_simple.html

Sometimes users can only slide one slide at a time; sometimes they can slide multiple slides at a time.

The sliding effect can be moving from left to right or from right to left. It can also be fade in/out or other fancy effects.

And slide contents can be images or text.

The ARIA Authoring Practices (http://www.w3.org/WAI/PF/aria-practices/#aria_ex) provides no guidelines for building a sideshow. Therefore current slideshows implementations on the internet aren't very accessible to AT's users.

Do we need a new guideline for slideshows? If not, could you please suggest how to make slideshows more accessible by using available resources/APIs?