Thanks for the question. As newbie, now i learned ]help and also ⍶ ⍹
I was on the "research" of how to define user operator too.
I like ⍶ ⍹ better than Dyalog's ⍺⍺ and ⍵⍵
because { ⍺⍺⍺⍵⍵⍵ } will return a vector of ⍺ ⍺ ⍺ ⍵ ⍵ ⍵ on GNU APL,
with Dyalog, one has to add "space" to not confuse with operator's function.
( Now, I just have to add ⍶ ⍹ on my keyboard mapping to use them )Thanks, David
