The commands that control videodisc machines are actually commands in HyperTalk scripts. Use the button tool to double-click on one of the buttons on the previous cards. Click script to see how these commands are used. On the next two cards are all variations on the Video command. You can put many of these into the message box (command-Drag) and press Return to try it out. (If you need to change the brand of machine, see "Setting the brand of Videodisc player.")
Video Play -- plays at normal speed (30 frames per second)
Video Search, 12345 -- jump to frame number 12345
Video Search,message -- jump to the frame whose number is in
the message box
Video Step -- steps 1 frame forward
Video Step, Reverse -- steps 1 frame backwards
Video Slow -- plays 1/16th normal speed (2 fr./sec.)