what is this and why does this work? (its not a menu item, drag it into snap to use it)
It's like COLUMNS (interchange rows and columns) except that it works for arrays of more than two dimensions, interchanging dimensions 1 and n, dimensions 2 and n-1, etc.
For a while it was in that menu, but it was deemed too complicated for most users. It's in the APL library, if you want to see the algorithm. The special case of two dimensions runs a lot faster, another reason that's what we chose.
How did you find it? And, is it just on my computer that the letter spacing is weird?
I think it's just their image.
Mine:
(unless you also see the weird letter spacing in the snap editor)
Huh. Looks like their font's lower case "s" is strange in some way.
I actually confused the primitive with APL and wondered why something actually happened.
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