Tail for BASIC. On a slow printer or CRT, you could ^C and only see the last few lines. Better than printing out the entire thing from the beginning.

Or did it have a way of listing only a certain range of line numbers?



On 11/18/2017 6:16 PM, Don Hopkins wrote:

On 18 Nov 2017, at 23:37, Dave Horsfall <dave@horsfall.org> wrote:

On Sat, 18 Nov 2017, Don Hopkins wrote:

(LISTREVERSE}

Chalk one up for DEC and BASIC. What other programming languages support that feature, huh? 

You could probably do it in APL; you could do damned well everything else after all...[*]

If you LISTREVERSE’ed a Lisp program, it would look like PostScript with parens! 


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.

Why on earth would you want to?

I have been wondering about that for years. 

Here’s the manual! LISTREVERSE is documented on page 9-3. Maybe if I printed out the "READERS COMMENTS" form at the back of the manual, wrote my question in big upper case block letters, then ticked the "If you require a written reply, please check here” checkbox, then “Fold Here” and “Do Not Tear - Fold Here and Staple” as instructed, I could mail in the free first class pre-addressed, business reply mail, no postage stamp necessary if mailed inside the United States envelope, and they’d write me back a nice letter telling me what the fuck they were thinking. 

http://bitsavers.informatik.uni-stuttgart.de/www.computer.museum.uq.edu.au/pdf/DEC-20-LBMAA-A-D%20BASIC%20User%27s%20Guide.pdf

-Don