Contents of TOP Menu

After the data files have been read in but not yet displayed, the following top-level menu appears across the top of the screen:

The entries in this menu indicate further sub-menus, which can be selected by placing the cursor on the appropriate word in the menu and then clicking the mouse, i.e. pressing any button on the mouse. (In release 2b of GKS, no distinction is possible between different buttons on the mouse).

1. In the following discussion, each menu item is prefixed or followed by a reminder in curly brackets of which menu the option appears in, e.g. option FILE in the TOP menu will be referred to as "{TOP}FILE" or as option "FILE in {TOP}"; option PRINT in the FILE sub-menu will be referred to as "{TOP.FILE}PRINT" or option "PRINT in {TOP.FILE}"
2. All menus have a Quit option which switches control upwards to the immediately preceding menu. This option is invoked by choosing the menu title (the leftmost part of the menu) with a single click of the mouse button.
3. When information is displayed in the right-hand panel, quantities shown in cyan can be changed by picking the currently displayed value and then entering the required value via the keyboard. To pick an item, locate the item by moving the mouse, then depress the mouse button once. Some of the items shown in cyan can be toggled between two values by picking the current value. Where a color is being chosen, the default color is shown as a solid bar; alternative colors can be displayed in succession by repeatedly picking the color bar. Values shown in yellow cannot be changed by picking.