diff --git a/src/linearalgebra.jl b/src/linearalgebra.jl
index 47f39092..80fae59f 100644
--- a/src/linearalgebra.jl
+++ b/src/linearalgebra.jl
@@ -1,5 +1,26 @@
+"""
+    mul!!(C, A, B) -> C′
+"""
 mul!!(C, A, B) = may(mul!, C, A, B)
 
 pure(::typeof(mul!)) = NoBang.mul
 _asbb(::typeof(mul!)) = mul!!
 possible(::typeof(mul!), C, ::Any, ::Any) = ismutable(C)
+
+"""
+    lmul!!(A, B) -> B′
+"""
+lmul!!(A, B) = may(lmul!, A, B)
+
+pure(::typeof(lmul!)) = *
+_asbb(::typeof(lmul!)) = lmul!!
+possible(::typeof(lmul!), ::Any, B) = ismutable(B)
+
+"""
+    rmul!!(A, B) -> A′
+"""
+rmul!!(A, B) = may(rmul!, A, B)
+
+pure(::typeof(rmul!)) = *
+_asbb(::typeof(rmul!)) = rmul!!
+possible(::typeof(rmul!), A, ::Any) = ismutable(A)