- Setting up the field for #2603.

Author: Xliff

doc/Language/setbagmix.pod6

@@ -66,12 +66,14 @@ associated weights are the 'values':
     Bag / BagHash     a positive integer          0
     Mix / MixHash     a non-zero real number      0
 
-=head1 Set/Bag operators
+=head1 Set-Like operators
 
 There are several infix operators devoted to performing common operations on
-L<Set|/type/Set>, such as unions and set differences. Other operations
-include boolean checks, like whether an object is an element of a
-C<Set>, or whether one C<Set> is a subset of another C<Set>.
+C<Set-Like> types. Set-Like objects are comprised of L<Set|/type/Set>s,
+L<Bag|/type/Bag>s, and L<Mix|/type/Mix>es. Operations that can be performed
+on C<Set-Like> types things like unions, set differences and include boolean
+checks, like whether an object is an element of a C<Set>, or whether one C<Set>
+is a subset of another C<Set>.
 
 These infixes can be written using the UTF-8 character that represents the
 function (like L<∈|/routine/∈>, or L<∪|/routine/∪>), or with an equivalent ASCII