The director of examinations or his designee may, by appropriate notice, invite candidate review of and the submission of objections with respect to a tentative rating key for short-answer written tests constituting all or part of an examination for the purpose of enabling a committee on appeals to recommend a final rating key which, upon approval by the commission, shall be applicable to all candidates. Such review may, but need not be limited to locations in Albany, Buffalo and New York City. The eligible list may be established pending consideration of the rating key by the commission, in which event objections to the tentative rating key filed by candidates shall constitute appeals to the commission. Every candidate shall be granted an opportunity to inspect his scored answer papers, or a photographic copy thereof, and the rating key and scoring tables in order to detect any errors in the application of such rating key to his answer sheet.