*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⟩

           a ← 3‿3 ⥊ ↕9

           2‿0 ⊏ a