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+# Precompiled `ArrayCopy` for `UnknownArrayHandle`
+
+Previously, in order to copy an `UnknownArrayHandle`, you had to specify
+some subset of types and then specially compile a copy for each potential
+type. With the new ability to extract a component from an
+`UnknownArrayHandle`, it is now feasible to precompile copying an
+`UnknownArrayHandle` to another array. This greatly reduces the overhead of
+using `ArrayCopy` to copy `UnknownArrayHandle`s while simultaneously
+increasing the likelihood that the copy will be successful.