CONFIDENTIAL All requests for codewords should distinguish between ds required for designating geographical locations (under 2(iii) above) and those required for other security purposes, since the former are drawn from a special index. 8. The use of words as codewords other than those obtained by these means is not authorised. Procedure 9. Whenever it becomes necessary to bring a codeword into use, the procedure set out in the following paragraphs should be adopted. 10. Designation (a) The sponsoring authority, having obtained a suitable word by the means outlined in paras.