Some old commands in there I haven't used in a long time (poke, uucp), or never used - I think the troff I know is actually the one in GWBASIC (tracing off).
https://www.youtube.com/watch?v=IQoL_qpYbW0
More useful but not quite as magical as DECSYSTEM 10 and DECSYSTEM 20 BASIC's "LISTREVERSE" command!
https://web.archive.org/web/20210713130832/https://imgur.com...
Chalk one up for DEC and BASIC. What other programming languages support that feature, huh?
Now all you need is a COMEFROM and COMESUB and RUNREVERSE (or NUR) statements, and you can write reversible BASIC programs!
https://en.wikipedia.org/wiki/Reversible_computing
https://en.wikipedia.org/wiki/Counter-Clock_World
DECSYSTEM 20 BASIC User's Guide: LISTREVERSE command
LISTREVERSE
LISTNHREVERSE
LISTREVERSE and LISTNHREVERSE print the contents of the
user's memory area in order of descending line numbers.
LISTREVERSE precedes the output with a heading,
LISTNHREVERSE eliminates the heading.
LISTREVERSE
EQUIV 10:53 13-NOV-75
40 END
35 PRINT "THE EQUIVALENT CURRENT IS",I, " AMPERES"
25 I=E1/R
10 INPUT R
5 INPUT E1
READY
http://bitsavers.org/www.computer.museum.uq.edu.au/pdf/DEC-2...
Emacs should have an edit-reverse-mode!