Ken Shirriff's post from 2019 is trending on TwoStopBits, and for a reason: it's a great post about 80x25

https://www.righto.com/2019/11/ibm-sonic-delay-lines-and-history-of.html

IBM, sonic delay lines, and the history of the 80×24 display

What explains the popularity of terminals with 80×24 and 80×25 displays? A recent blog post " 80x25 " motivated me to investigate this. The ...

@nina_kali_nina I really want to try and make a delay unit. But I suspect it’ll be an exercise is pain
@nina_kali_nina this link is cloudflared :(
@nina_kali_nina static.righto.com is separate cloudflared too, causes images not loading even after passing cloudflare on main domain until i open some image... and it''s fatally cloudflared, looping on verification. What a broken clownflare setup!
@nina_kali_nina
I wonder how many 80x25 terminals ended up mostly using the 25th line as some kind of status line, either fixed-function or programmable (like vt320+)
@redsakana that makes two of us! Even IBM PC Basic and MS-DOS on PC-98 used their 25th line for the function line...
@nina_kali_nina @redsakana my ibm 3161 uses it as a status line