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Separates statements in blocks, programs, and arrays. Characters , and ⋄ are interchangeable with each other and with newline.
a ← 3 , ⊢ b ← 2
1 ⋄ 2 , 3
⟨1 , 2 ⋄ 3⟩
{1 ⋄ 2 ⋄ 3}