Proposed edit to repair success criteria

I propose the following wording change to make the success criteria for 
B.2.3 (Assist authors in repairing accessibility problems. [Priority 
RP]) more clear (it is intended not to change the meaning at all):


For each potential accessibility problem identified by the checking 
function (required in Checkpoint B.2.2) provide one of the following:

- repair instructions, for the author to follow, that are specific to 
the accessibility problem

- an automated or semi-automated repair mechanism.


Cheers,
Jan