At 2019-07-01T18:44:47+0200, Tadziu Hoffmann wrote: > > Now, conversely, the backspacing semantic model supports arbitrary > > character composition, which glass TTYs and their emulators never > > do. (Almost never? I'd love to hear of any exceptions.) > > Tektronix (storage scope) terminals allowed arbitrary overprinting. > The Tek emulation in xterm still supports this.
Aha, thanks! I've only ever played with the Tek 4014 mode enough to the U.S. map and other demos to print. I was trying to get the 1976 edition of CSTR #54 to typeset the other evening, and having partial success, and noticed that there used to be an output driver for Tektronix displays. "tcat" was the name of the tool. That's good--I feel better about my example now, even if I feel worse about groff's lack of an output driver for the Tektronix. > (Overprinting also used to be central to generating the full APL > symbol set.) Hmm, yes. I think the success of APL has something strong to say about the Sapir-Whorf hypothesis, if only I could work out what. Regards, Branden
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