GMG OpenColor was proving to be a valuable tool to the flexo printer. Apart from checking the colour accuracy, GMG OpenColor also makes sure moire, incorrect trapping settings and other defects will not become the showstopper of the upcoming production run. By easily creating halftone profiles for the colours required, be it CMYK or spot colours, users can then print high-end halftone proofs that predict the press result with dot-for-dot precision, including the screen rulings, angles, dot shape and dot gain. That halftone proof must be created with the original 1-bit imagesetter data. GMG predicts exactly what will happen during plate exposure and what will happen on the printing press. Unlike many competitor products, GMG software does not simply print CMYK channels on top of each other, dot-by-dot, but adds coloured microdots to the screened dots to.