17. The Chair from the Informal Group on the revision of Regulation No. 55 introduced GRRF-74-24, GRRF-74-25 and GRRF-74-26. GRRF noted the intention to bring forward two proposals and agreed on the proposed Terms of Reference and Rules of Procedures as reproduced in Annex V however, the Informal Group was invited to provide GRRF with further clarity of the scope of the second proposal for consideration. GRRF expected to consider the first proposal of the informal group on the basis of an official document at its next session in September 2013.