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The Main Menu

The Main Menu enables the user to select any of the other available menus, and the ZOOM function. Any item can be selected by placing the cursor on the menu name, and pressing . The options are:-

• PREFERENCES - this menu has not been implemented and trying to select it will have no effect.
• DISPLAY - Selecting this menu gives various options for changing the contrast and lookup table of the image displayed in the image display area.
• ZOOM - This does not select a menu, but is an option. After selecting the ZOOM option with , pressing again zooms in, while zooms out. Moving the mouse on the keypad while the display is zoomed moves the cursor in the image in the same sense as the mouse is being moved on the pad, while attempting to keep the cursor in the centre of the screen. This results in the image moving on the screen in the opposite sense to that in which the mouse is being moved, with some timelag. returns the display to normal (i.e. not zoomed), and returns the user to the Main menu.
• STATISTICS - Selecting this menu gives various options for defining windows in the data area, and for statistical operations on the data within these windows.
• WINDOWS - This menu gives options for defining windows on the DMS screen, but is not currently used.
• 3D MODES - This menu gives options for examining three dimensional data arrays. These are not useful for any of the ISIS data acquisition modes implemented to date.
• SCREENS - This menu allows the user to select between types of data (i.e. CCD or IPCS), and will in future be used to select between display formats.