Interactive rotation of the colour table controlled by a graphics menu. A number of ``buttons'' are produced within the graphics window which allow the current colour table to be rotated by set amounts. By clicking in the different ``buttons'' the user should see the immediate effect of rotating the colour table. The ``button'' labelled DEFAULT returns the colour table to the values that were defined at the start of the operation. The ``button'' labelled EXIT is used to return to the main menu.
Note: As the background and text are drawn using two of the colour levels, they will change colour during the rotation of the colour table. Text may no longer be visible. After the ROTATE LUT command a PLOT DATA command can be issued to draw the data with the rotated colour table and correct background and text colours.