=head1 NAME

IUP::GL::Toggle - [GUI element] GL-based two-state (on/off) button

=head1 DESCRIPTION

XXX-TODO: missing doc

=head1 SEE ALSO

The original doc: L<iupgltoggle.html|http://www.tecgraf.puc-rio.br/iup/en/gl/iupgltoggle.html>


=cut