https://en.m.wikipedia.org/wiki/Transputer https://en.m.wikipedia.org/wiki/Transputer says that the Inmos D700 Transputer Development System had a folding edito

https://en.m.wikipedia.org/wiki/Transputer https://en.m.wikipedia.org/wiki/Transputer says that the Inmos D700 Transputer Development System had a folding editor. That would have been in the early 1980s I think?