Terminal Guide

DSR 63 (historically: memory checksum)

ESC1B[5B ?3f 6336 33 ;3b Ⓝid n6e
xterm
✔
vte
✔

See below for details:

xterm ( ✔ )

🛈 replies with ESC1b P50 Ⓝid !21 ~7e 030 030 030 030 ESC1b \5c .

🛈 Versions 334 and 335 had a bug that it always replied with ESC1b P50 636 333 !21 ~7e 030 030 030 030 ESC1b \5c .

vte ( ✔ )

🛈 Always replies ESC1b P50 Ⓝid !21 ~7e 030 030 030 030 ESC1b \5c  🛈 if id is omitted in the request it's also omitted in the reply.