[pjmlp]

The example on the linked video it isn't, correct.

Here is another video, this time with S-PACKAGE used to develop Nintendo 64.

https://www.youtube.com/watch?v=gV5obrYaogU

Which given the REPL capabilities, you can easily embedd them on it, just like the other video.

[orbital-decay]

Later rebranded as Mirai. I remember playing with a pirated copy of Nichimen Mirai somewhere in 2001 (I think), it looked weirdly Ediacaran in the Cambrian explosion of the late 90s.

[steezeburger]

So you're saying that the Xerox workstation didn't have inline 3d graphics rendering capabilities? And in fact this isn't an instance of UNIX trying to catch up to Xerox workstations' REPL from yester-decade?