Synonym of Prime disclaimer

Prime¸ as in Y'¸ R¸ etc.
The video signal or its components are correctly referred to by the various terms Y, R-Y, G,  Cb, etc. without the apostrophe or "prime symbol" when the signal has not been modified to compensate for the gamma of the picture tube. The prime symbol is added, as in Y', Cb', etc. to refer to a video signal after gamma compensation. Prime Disclaimer -- To simplify things, all of the descriptions on this web site ignore the gamma compensation, and the terms Y, R-Y, etc. are used without the apostrophe throughout. This represents a slight dumbing down and departure from correctness of the material on this web site.