=head1 VERSION
-Version 0.01
+Version 0.02
+
+=head1 DESCRIPTION
+
+L<LaTeX::TikZ::Set> objects that are mutable consume this role.
+This forces them to implement an C<add> method describing how more elements can be added to the set.
=cut
-our $VERSION = '0.01';
+our $VERSION = '0.02';
use Any::Moose 'Role';
-requires qw(
+=head1 METHODS
+
+This method is required by the interface :
+
+=over 4
+
+=item *
+
+C<add>
+
+=back
+
+=cut
+
+requires qw<
add
-);
+>;
+
+=head1 SEE ALSO
+
+L<LaTeX::TikZ>, L<LaTeX::TikZ::Set>.
=head1 AUTHOR