By 1985, the links were still being recorded, but using a common, stylized set known as Network Control, which allowed the presenter to be joined by guests in the studio for interviews. The exterior of this fictitious location also featured in the animations and stings. Technical considerations often left the system flawed. With each programme coming from a different playout source (usually from that of the originating ITV company, i.e. if the first programme was "Rainbow", which came from Thames TV, the staff there would have to run the tape while the presenter was talking and wouldn't show Thames TV's skyline ident before the programme's titles) and each link being pre-recorded (played out by Central), things often went wrong on air: Programmes would be rolled early and the links would be cut short. Programmes would also fail to appear and the presenter would be left on screen. Because each link was recorded for the slot available, the presenter would hold the final pose for a few moments so that the transmission controller at Central had something to leave on screen just in case. Pre-recording the links also meant that late schedule changes could not be easily referenced.