func init
	// checks installation Adobe Photoshop and adds references
	include("AdobePhotoshop")

	// initialize instance
	sys.add_object(this.codename, 'ps.GIFSaveOptions')

	// initialize properties
	sys.set_field('Colors')
	blk_init.println(this.codename, '.Dither = ', sys.get_typed_field('ps.PsDitherType.psNoDither', 'Dither', 14, 'ps.PsDitherType'), ';')
	if(this.props("Dither").value == 'psDiffusion')
		sys.set_field('DitherAmount')
		blk_init.println(this.codename, '.PreserveExactColors = ',  sys.get_typed_field('false', 'PreserveExactColors', 104), ';')
	end
	blk_init.println(this.codename, '.Forced = ', sys.get_typed_field('ps.PsForcedColors.psNoForced', 'Forced', 14, 'ps.PsForcedColors'), ';')
	sys.set_typed_field(104, 'Interlaced')
	sys.set_typed_field(14, 'Matte', '', 'ps.PsMatteType')
	sys.set_typed_field(14, 'Palette', '', 'ps.PsPaletteType')
	sys.set_typed_field(104, 'Transparency')

	// make methods for properties
	sys._prop_init('Colors', 0, 1, 1)
	sys._prop_init('Dither', 0, 1, 0)
	sys._prop_init('DitherAmount', 0, 1, 1)
	sys._prop_init('Forced', 0, 1, 0)
	sys._prop_init('Interlaced', 0, 1, 104)
	sys._prop_init('Matte', 0, 1, 0)
	sys._prop_init('Palette', 0, 1, 0)
	sys._prop_init('PreserveExactColors', 0, 1, 104)
	sys._prop_init('Transparency', 0, 1, 104)
end

func SaveOptions
	return(this.codename)
end