-text => 'This demonstration displays, for two seconds, a picture of a teapot over a green background, then proceeeds to render transparent a 50 x 50 pixel area of the teapot so that the green background shows through.',
-title => 'Transparent Pixels',
-iconname => 'photo1',
);
my $l = $TOP->Label( qw/ -background green -width 300 -height 300 / )->pack;
my $f1 = $TOP->Photo( -file => Tk->findINC( 'demos/images/teapot.ppm' ) );