Graydon wrote:

Well, coming up on 4 decades, we have roff, and all its various --
nroff, troff, groff -- descendants.  The examples in the original Bell
Labs papers work with current shipping open source groff.

OK, that's one. ... out of how many?

And let's not forget, how'd you store that *roff input file? Paper tape? Punch cards? 14" open-air disk packs? 9-track tape in any of three or four different densities? 8" floppy disks in any of a dozen or more formats? 5.25" floppies in even more formats? 1.44" floppies in a handful of formats? Any of fifty or more varieties of "consumer" tape products? ...

For paper, you need the paper. For any digital storage medium, you need an entire, *operational* system including peripherals and software.

--
Thanks,
DougF (KG4LMZ)

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