ANNEX PROCEDURE FOR PREPARING ESTIMATES RELATING TO ENEMY PLANS. On receipt of the problem the Secretary will issue Terms of Reference to the J.I.S. 2. The J.I.S. will then prepare a draft operational appreciation covering the following points:(a) Assumptions, in conjunction with the J.P.S. (It may be necessary to have these approved by the J.I.C. before proceeding further). (b) Strategic background, supported by appendices covering:(i) Individual and collective Military potentialities of the countries in the area, and (ii) the significance to the Enemy of the countries in the area.