Key Modifier Options (XTMODKEYS) sets/resets xterm key modifier options.
Default is 0.
CSI > Pp mCSI > Pp ; Pv m Copy
CSI > Pp mCSI > Pp ; Pv m
If Pv is omitted, the resource is reset to its initial value.
Pv
The parameter value
Optional value parameters
The key modifier options escape sequence
https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h3-Functions-using-CSI-_-ordered-by-the-final-character_s_
Key Modifier Options (XTMODKEYS) sets/resets xterm key modifier options.
Default is 0.
If
Pvis omitted, the resource is reset to its initial value.