4. The expert from OICA introduced GRPE-61-04 proposing to insert some minor editorial corrections into global technical regulation (gtr) No. 4 on the Worldwide harmonized Heavy Duty Certification procedure (WHDC). He added that these corrections also apply to the relevant text of Regulation No. 49. GRPE requested the secretariat to distribute GRPE-61-04 with an official symbol and to resume consideration of this proposal at the next session of GRPE in June 2011.