Accessibility requirements for navigation

[avneeshsingh]

The following wiki describes accessibility requirements for navigation from user perspective, and provides clarifications for some related concepts discussed in the group.
https://github.com/w3c/publ-a11y/wiki/Description-of-Accessibility-Requirements-for-WP

[avneeshsingh]

The document for accessibility requirements for navigation was created to help in making decisions for default reading order and TOC. We have made designed decisions so in a way the first objective is accomplished. But we yet need to complete the accessibility review. So, I would suggest to keep it open till we are done with the formal accessibility review.