The term "professional staff" as used in clause (ii) of para 1 of Annexure I to RBI's letter No. DBS.ARS.No. 650/08.91.008/2003-04 dated 1st March, 2004 containing the revised empanelment norms issued by the Reserve Bank of India (applicable from the year 2005-06 and hosted on the Institute's website) also includes other audit staff having knowledge of book-keeping and accountancy and engaged in outdoor audit besides articled clerks and audit clerks."