27. The expert from OICA introduced GRB-56-13, providing an overview of the current definitions in UN Regulations under the responsibilities of GRB. However, GRB agreed to resume discussion at its February 2013 session on the basis of informal documents listing all acronyms associated to the UN Regulations concerned. Accordingly, GRB agreed to follow the layout of GRSP-51-03, considered during the May 2012 session of the Working Party on Passive Safety (GRSP), designed for this purpose. Finally, it was agreed that the informal documents would list the acronyms of: (i) UN Regulation No. 51 by the expert from OICA, (ii) UN Regulations Nos. 59 and 28 by the expert from CLEPA and (iii) UN Regulation Nos. 9, 41, 63 and 92 by the expert from IMMA for consideration at the next session of GRB.