When viewing the Access rules for authenticated user admin/config/people/taxonomy_access/role/2/edit

I thought it was worth noting that there is a fairly complex table used to organize the permissions. This would really benefit from having a semantic relationship between the row and the header such that it is easier for a blind user to identify the context they are in:

http://www.w3.org/TR/WCAG20-TECHS/H43.html
http://webaim.org/techniques/tables/data