PIXIE is the other production HyperTIES database. This is the door.

1969, Cambridge: Heinz Lemke, Neil Wiseman, and John Hiles. Light pen, radial buttons that travel with the tracking cross, circuits drawn on a PDP-7 and analysed on Titan. The earliest known pie menus.

Run it: PIXIE live — SYMELEC, the 1972 PIXIE program, executing on an emulated PDP-7 with a Type 340 display, in this page. Press and drag on the tube; the mouse is the light pen. The page says which buttons draw a line, and ends with the 1969 film.

How it got running. Each of these transcludes the working document itself, so what you read is what is in the repository.

• Bug journal — every bug found getting here. Two one-digit transcription errors only showed up when SYMELEC ran; one bug is 1972's own.
• Transcription report — 128 pages of printout into octal: the pipeline, the checkers, what the scribes got wrong.
• The listing — the 1972 printout itself, and the rules for copying it.
• Off by one — field notes from the first four rungs: boot, display, tracking, the Titan link.
• Tracking — how the tracking cross follows a pen that only sees light.
• Tiny Titan — the Cambridge mainframe as the smallest part on the backplane.
• Cabinet design, Web bench, SIMH map — how the emulator is built, and what it borrowed.

The people and the machine.

• Heinz Lemke — co-author, 1969; his assembler listing is what the emulator runs.
• PDP-7 — the machine: an 18-bit DEC minicomputer with a vector display.
• The emulator — the browser PDP-7 and the desktop SIMH bench it is checked against.
• Lars Brinkhoff — the iron: SIMH work and the Type 340 character glyphs the emulator draws with.
• Roy Eagleson — leading students at Western University to re-implement PIXIE.
• The films — the 1969 reels.
• The plan — everything in the WillWrightShowForFood rooms, transcluded, and what comes next.
• Master Index — every name in this database.

Target named in the WWSFF rooms: CARS 2027 Berlin, 29 June.