On Tue, 2007-12-18 at 14:49 -0800, Joey K Tuttle wrote: > As regards APL characters. Seeing uppercase M overstruck > by uppercase O doesn't really generate a very pretty > icon for rotate, and grade up (H over M) was better than > grade down (G over M)... When I did get a real APL type > element, I too quickly fell in love with the graphics.
I recall a comment in the APL\360 source code, likely from Larry Breed or perhaps Roger Moore, muttering about "... the dark, immoral side of visual fidelity." The comment headed up some code that handled overstrikes, which enabled you to, e.g., form a rotate by typing circle-backspace-verticalbar. The author had gone a bit overboard in this area, and you could: form an E by overstriking L with F form a diamond (much later, same code) by overstriking < with > form a $ by overstriking S and | form a ! by overstriking ' with . and so on. Lots of laughs. Bob ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
