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My dad was a CAD engineer from the early 80s until he was laid off in 08, before that he was a drafter on pen and paper. He was the first one in his company to be given a computer for CAD, and he said this was basically what he would do.

"action shape center_x center_y width height"

But he said that everything was "conjoined" by default.

He could be wrong (it was 45 years ago, and he's in his 70s now), but he would type: a {return} c {return} 0 {return} 0 {return} 1 {return} 1 {return}

That would add a cube. All the commands/params could be shorthand or long hand, but he was a two finger typist, so there is no way he'd have typed out an entire word that spanned multiple sides of the keyboard like "cube".

You could subtract a sphere with "s {return} s" and I'm assuming you could intersect with "i" or similar, but he doesn't remember ever doing that.



For a current example of a tool which works along those lines see the venerable BRL-CAD:

https://brlcad.org/




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