Changes the colour table used to display images. It operates in the modes given below:
DEFault default table GREY select greyscale GREEN green table BLUE blue table RED red table RAINbow rainbow table RGB 3-colour table NEG invert current table NORM switch off NEG POS same as NORM EDIT interactive edit READ read external tableEDIT mode the RGB components of 16 colours equally spaced throughout the full range are displayed on the terminal screen. As the values of these are changed, the colours inbetween are interpolated and the resulting changes shown on the graphics display surface. In READ mode the name of an HDS object containing a colour table is specified.