G.f. method
Returns #t if two objects are equal.
= color1 color2 => boolean= pen1 pen2 => boolean= brush1 brush2 => boolean
= text-style1 text-style2 => value
<color>.
<color>.
<pen>.
<pen>.
<brush>.
<brush>.
<text-style>.
<text-style>.
<boolean>.
duim-dcsduim-dcs Returns #t if two objects are equal.