Accessibility documentation for themers

Lee has asked for some docs for the Best Practices section of the Theming Guide (http://drupal.org/node/341707).

I made a start a couple of weeks ago but it would be good to get some feedback on what we think should go into this.

I'm tending to think it should be pretty high level, but with enough depth and examples so a themer can pretty much get the basics right without having to go to an external resource, but with links to external resources with additional information.

One thing I found really hard when getting invloved with Accessibility is the sheer bredth of the information and that it can be hard to find simple strait forward task based tutorials or "how tos". Lets give themers some tutorials such as "How to include ARIA roles" and "How to include an accessible Skip to Main Content" link etc.

For the main docs I'll get the ball rolling and say we should at minimun include (in no particular order):

• Headings - proper use/nesting of heading elements
• Skip links
• ARIA roles
• Hiding Content overview
• Color and Contrast
• Font sizing
• Standards and Validation services
• Tools

Anything else you can chime in with would be great:)

UPDATE: The documentation written since this was first posted can be found here - http://drupal.org/node/464472