we should be able to support some of the window manipulation (CSI t) extensions that xterm has, at least as long as the runtime allows us

https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h2-Functions-using-CSI-_-ordered-by-the-final-character_s_
CSI Ps ; Ps ; Ps t
          Window manipulation (from dtterm, as well as extensions by
          xterm).  These controls may be disabled using the allowWin-
          dowOps resource.