Str82u - 5:08 am on Mar 27, 2013 (gmt 0)
No, You're thinking of accesskeys (and replacing it with tabindex); navigation and labeling are important but there is only one required accesskey/tabindex/link. Accesskeys operate mechanically by pressing ALT (or ALT+SHIFT) and a "access" key simultaneously; ie ALT+2 is Home, ALT+9 is Sitemap, ALT+N is News Page, etc. Some users can't use the keyboard or may be severely limited so you want simple, static and easy to remember commands rather than trying to cover every single link on every single page. Some of the popular screen readers are looking for these as navigation links but you can put as many in as YOU want to aid users on page. Your accessibility page should have a "key" menu on it for reference.
I think in order to be 100% compliant, every link on any given page should be accessible to somebody with only a keyboard
example I used the first time: [homeoffice.gov.uk...]
Cynthiasays was non-functional the other day (and is right now) but it is possible to achieve 100% all those items just like 100% validation. One note that won't apply to many people is that Federal (US gov) sites or agencies may not endorse or use the services of a site that is not 100% compliant.
It's something where you'll never pass 100%, kind of like HTML validation
This is the page from W3 that suggests tools: [w3.org...]
Here's one I've used excessively but it's limited use as a free tool but it tells you what to do and where to fix it:
Here's one JUST I tested and it's on the W3 list, a little crowded and confusing at first: