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+*View this file with results and syntax highlighting [here](https://mlochbaum.github.io/BQN/help/join_jointo.html).*
+
+# Lazy S (`∾`)
+    
+## `∾ 𝕩`: Join  
+    
+Join all elements of `𝕩` together.
+    
+Element ranks must be compatible.
+    
+           ∾ ⟨1‿2, 3, 4‿5⟩
+
+           m ← (3‿1≍⌜4‿2‿5) ⥊¨ 2‿3⥊↕6
+
+           ∾ m
+
+    
+    
+## `𝕨 ∾ 𝕩`: Join
+    
+Join `𝕨` to `𝕩` along the first axis.
+    
+           "abcd" ∾ "EFG"
+
+           a ← 3‿3 ⥊ ↕9
+
+           c ← 4‿3 ⥊ ↕12 
+
+           a∾c
+
+