How does it achieve this frame rate? I thought teletext would cycle through the pages 100 to 899, sending one per frame? I guess the pages themselves are number

How does it achieve this frame rate? I thought teletext would cycle through the pages 100 to 899, sending one per frame? I guess the pages themselves are numbered and this only sends page 100 on every frame? Regarding not being able to "run" doom in teletext: I guess you could create a "game book" style experience with the 800 pages and use the colored buttons on the remote for "turn left", "turn right", "forward", "shoot/interact"; IIRC those were shortcuts for some relative page numbers on the current page.