@Adám how can I make stencil output matrices on a column rather than a row? (each under the other, and not side by side)

Also, are stencil stuff on topic here?

@Uriel You mean the language?

@Adám yup

@Uriel The ≡ option will output matrices with empty lines in between.

@Adám thanks!

@Adám hmm but it can't coexist with the exist option

@Uriel you shouldn't need both. The only difference (other than the display) is that ≡ goes forever if needed, while ∊ stops when it detects a cycle.

@Adám does it mean I can't use column view with the exist option?

It turns messy if the result gets over a few matrices

@Uriel You can insert 0⌿⎕←' '⍪ before the first code line.

@Uriel I know, but if you zoom out it may look ok, and technically, it does return the right result. I've been thinking of making ∊'s output just like ≡'s. Should I do that?