I didn't have a name I think. Now I wonder from what GUI I got the inspiration. As far as I remember it used the borders of the character set. It was written in

I didn't have a name I think. Now I wonder from what GUI I got the inspiration. As far as I remember it used the borders of the character set. It was written in Z80 assembly and could be used with | commands (I found | commands amazing in Basic). I was a kid and I had no distribution beside some friends. Only later with the Amiga I got distribution with magazines.