In article <01OVCAIM362Q006RW8 at beyondthepale.ie>,
Peter Coghlan <cctech at beyondthepale.ie> writes:
For another data point, I dug out my VT510 and set it
to 48 lines per page.
The results were the same. The scrolling region was not altered if the second
parameter was larger than 48.
I wonder if you inquire the terminal with ESC [ 5 n (device status report)
after attempting to set a value too large, if it will report an error
using ESC [ 3 n.
<http://manx.classiccmp.org/mirror/vt100.net/docs/vt100-ug/chapter3.html#DSR>
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