The very first programme on ITV Schools on 4 and S4C was "Environments", produced by Thames Television. On that historic first morning, Channel 4's trade test sequence was moved forward. Normally, they switched between test card, Oracle teletext, and 4-Tel every 15 minutes. The test card was normally always shown before programmes, with music. However, that first morning, it was Oracle teletext that was shown. At 09:26:57 the pages crashed out i.e. they disappeared suddenly, and a blank screen was shown. This remained for a full minute, until at 09:27:57 the screen had the grey background, with a 4 logo in the right hand corner on a strip. The sequence with the ITV logos, as described above, then commenced. Between September and late November 1987, the ITV logo on the ITV Schools clock freeze framed before the programme started to avoid showing an ITV company's ident.