Robust principles include:
- Maximize compatibility with current and future user tools.
Guideline 4.1
Compatible: Maximize compatibility with current and future user agents, including assistive technologies
Guideline Number |
Level |
Recommendations |
A |
Significant HTML/XHTML validation/parsing errors are avoided. Check at http://validator.w3.org/ |
|
A |
Markup is used in a way that facilitates accessibility. This includes following the HTML/XHTML specifications and using forms, form labels, frame titles, etc. appropriately. |