> #All tags must be XHTML valid — This means things like replacing all the <br> with <br />
This is regularly done on BRANCH-1-9
> #All images must have fixed sizes and valid ALTs
> #All tables must have a SUMMARY
For the FANCYTABLE plugin, we could add a field for Summary, so people can add this when editing a wiki page.
> #All data tables must have headers, signifed with <th> tags
I think FANCYTABLE plugin offers part of this
> #All data tables must assign column and rows correctly