Hi, Here's my latest headache generator : I want to create a GWorld that will use a color table. Is it possible to use a 'Pltt' or 'clut' resource ? I want to use a 216 colors 'web' palette to do color reduction on my PICT's. I'm using the Gif image filter from Staz to save the image. I understand the NEWGWORLD function, but not gwCTabh& and gdH&. Err% = FN NEWGWORLD (gwPtr&,gwPixDepth%,gwRect,gwCTabH&,gdH&,gwFlags&) This is from Inside Mac: The NewGWorld function generates an inverse table with the Color Manager procedure MakeITable, unless one of the GDevice records for the screens has the same color table as the GDevice record for the offscreen world, in which case NewGWorld uses the inverse table from that GDevice record. MAN ! No doubts why E.T. wanted to go home Any help is welcome; Thanks Sylvain