Update list.pod6

doc/Language/list.pod6

@@ -214,6 +214,15 @@ L<===|/routine/===> infix operator.  If you want to use another way to
 compare values, you probably should use
 L<first|/routine/first#(List)_routine_first>.
 
+To test C<List> or C<Array> equality as sets you can use the
+L<"equality"|/language/setbagmix@infix_(==),_infix_≡>
+L<C<Set>|/type/Set> operator.
+
+    my @a = 1, 2, 3;
+    my @b = 3, 1, 2;
+    say @a (==) @b; # OUTPUT: «True␤»
+    say @a ≡ @b;    # same, using unicode version of operator
+
 =head2 Sequences
 
 Not all lists are born full of elements.  Some only create as many