int Read Only Contains the horizontal position of the pixel currently being shaded This will be in the range of (0, XRES-1)
A feature of the APS is its encoding on the film itself of picture-taking and processing data IX (Information Exchange) technology allows photofinishing equipment to read instructions on the film and therefore make processing and printing adjustments to provide the best results from different lighting and exposure conditions, and also allows such features as mid-roll change
Interactive Executive An IBM implementation of UNIX that runs as a guest operating system under the VM operating system on mainframes