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+Variables
+Logic ∧∨¬
+Take, Drop, Shift ↑↓«»
+Under
+
+Trains
+Replicate /
+Extra arithmetic |⌊⌈
+
+Blocks
+Headers
+Modified assignment
+
+Scan `
+
+Arrays ≢=⥊⌜⍉˝˘
+
+Scalars
+
+Rank ⎉
+Depth ⚇
+
+Group ⊔