User blog comment:Alejandro Magno/ExE array of/@comment-2033667-20141021222936

what does "#+m" mean in the context of ExE's delimiter notation?

"E_&(#+m)_n = En#n#n" means that E_&(#+1) = E_&(#+2) = E_&(#+3) = ... = En#n#n, which is obviously not intended

what does "% is a structure of #'s" mean?

clearly you need to think this notation out a lot more, because it's barely defined at all.