Epsilon Underbar ⍷
Monadic Epsilon Underbar is not defined
Dyadic Epsilon Underbar means
'ana' ⍷ 'Banana'
0 1 0 1 0 0
X Y
┌───┬───────┐
│0 1│0 1 0 0│
│1 0│1 0 0 1│
│ │0 0 1 0│
│ │0 1 0 0│
└───┴───────┘
X ⍷ Y
1 0 0 0
0 0 1 0
0 1 0 0
0 0 0 0