sentences:  Ten's parent company, and shareholder in metropolitan ratings system OzTAM, Ten Network Holdings Limited, began discussions with the ratings system operator to have digital multichannels, such as 10HD and ABC Comedy, included in television ratings for the first time on 17 September 2007.As well as this, on the same day, it was announced that the national weekend editions of "10 News First" would be timeshifted from 10 onto Ten HD, an hour delayed at 6 pm, to directly compete with "Seven News" and Nine News.This would have seen 10 "News" First formally broadcast at 6 pm for the first time since 1992, however, the timeslot was later amended to 5.30 pm.