fractal ← {
  r ← ⊢ ⋄ i ← ⊢
  z ← 0
  ∀k∈1..100 {
    z ↩ r + i×i ⋄ r,i ↩ Re z, Im z
    |z| > 2 ? @k
  }
  0
}

m ← 80 40 ⥊ ∀(⍉(⍉+/∘fractal)⍉-2..1÷0.025⍉-1.2..1.2÷0.025)

∘.∊ " .:-=+*#%@" ⊏ m