I'm happy with pic(1). I got some of it working.

Just tired of open/close file for every little thing or constantly pasting
pic test.ms | troff | page.

I would like to have it open in acme and click put or sam and :w or and see it change quickly.

Its juust slower

Quoth ori@eigenstate.org:

Quoth william@thinktankworkspaces.com:

wow. No way to become lazy in plan9 for sure. Thanks. I will explore

pic(1) is quite nice for these kinds of diagrams, in my experience.

There are also things like pico (https://github.com/qwx9/pico), but

they're also textual.

I'm not aware of anyone writing anything much more advanced

than paint for interactive drawing. Programs welcome.