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*View this file with results and syntax highlighting [here](https://mlochbaum.github.io/BQN/help/firstcell_select.html).*
# Square Image Of (`⊏`)
## `⊏ 𝕩`: First Cell
First major cell of `𝕩`.
⊏ ⟨1, 2, 3⟩
a ← 3‿3 ⥊ ↕9
⊏ a
## `𝕨 ⊏ 𝕩`: Select
Select the major cells of `𝕨` at the indices in `𝕩`.
2‿0 ⊏ ⟨1, 2, 3⟩
b ← 3‿3 ⥊ ↕9
2‿0 ⊏ b
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