Tile: Dyadic Operator ⍺⍺ T ⍵⍵ ⊢⍵ Index   <<   >>
 

   {⊂⍵} T 3 5 ⊢4 5⍴⍳20
┌────────────┬─────────────┬──────────────┬─────────────┬────────────┐
│0 0  0  0  0│0  0  0  0  0│ 0  0  0  0  0│ 0  0  0  0 0│ 0  0  0 0 0│
│0 0  1  2  3│0  1  2  3  4│ 1  2  3  4  5│ 2  3  4  5 0│ 3  4  5 0 0│
│0 0  6  7  8│0  6  7  8  9│ 6  7  8  9 10│ 7  8  9 10 0│ 8  9 10 0 0│
├────────────┼─────────────┼──────────────┼─────────────┼────────────┤
│0 0  1  2  3│0  1  2  3  4│ 1  2  3  4  5│ 2  3  4  5 0│ 3  4  5 0 0│
│0 0  6  7  8│0  6  7  8  9│ 6  7  8  9 10│ 7  8  9 10 0│ 8  9 10 0 0│
│0 0 11 12 13│0 11 12 13 14│11 12 13 14 15│12 13 14 15 0│13 14 15 0 0│
├────────────┼─────────────┼──────────────┼─────────────┼────────────┤
│0 0  6  7  8│0  6  7  8  9│ 6  7  8  9 10│ 7  8  9 10 0│ 8  9 10 0 0│
│0 0 11 12 13│0 11 12 13 14│11 12 13 14 15│12 13 14 15 0│13 14 15 0 0│
│0 0 16 17 18│0 16 17 18 19│16 17 18 19 20│17 18 19 20 0│18 19 20 0 0│
├────────────┼─────────────┼──────────────┼─────────────┼────────────┤
│0 0 11 12 13│0 11 12 13 14│11 12 13 14 15│12 13 14 15 0│13 14 15 0 0│
│0 0 16 17 18│0 16 17 18 19│16 17 18 19 20│17 18 19 20 0│18 19 20 0 0│
│0 0  0  0  0│0  0  0  0  0│ 0  0  0  0  0│ 0  0  0  0 0│ 0  0  0 0 0│
└────────────┴─────────────┴──────────────┴─────────────┴────────────┘
•   Tile sizes apply independently to each axis.
Each element ofin its turn is the middle of a tile.
The right arguments of the operand function ⍺⍺ have uniform shape.
Shards are symmetric on each side.