When Thomas E. Dickey [1] stops taking care of Xterm (and much else), it will be the end of an era.

[1] https://invisible-island.net/

It can also display images using sixel [0].

[0] https://en.wikipedia.org/wiki/Sixel

My favorite xterm capability is the ability to display Tektronix vector graphics.

http://sites.science.oregonstate.edu/~landaur/nacphy/coping-...

I started combining that with subleq as an experiment in minimalist programming.

Will be nice to find a program library of examples. It seems that it could do interesting things.