GGU-STABILITY: "Define new" menu item
You can define the positions of the individual slip body polygon points with the left mouse button. After selecting this menu item you can activate a dialog box with [Shift] and the [F4] function key, which will inform you as to the position of the mouse pointer (x and y coordinates; soil type. [Shift] and the [F5] function key open a dialog box which offers information, amongst other things, on the inclination of the nearest slip line. If the shape of the slip body is according to your wishes, you must press the [Return] key to accept. You can then, if so wished, define further slip bodies.
You can also carry out this action after slip bodies have been calculated.
If you have mistakenly carried out a wrong mouse click, which has ruined your slip body, simply press the [Backspace] key and you will return to the old condition.
If you have selected "Vertical slice method" as calculation procedure, input is completely analogous. You may even switch to the "Vertical slice method" after having specified polygonal slip bodies after "Janbu" in the menu item "Editor 1/Analysis options", and carry out the calculations immediately after.
If you have selected "General wedge method" as calculation procedure, input is completely analogous, except that then vertical intermediate slip surfaces will be assumed. Therefore, a dialog box appears at the upper left of the program window:

Activate the "Principal slip body" switch if you would like to define the main slip surfaces of the failure body. You then proceed in complete analogy to the above described actions. For each new main slip body point, the program automatically assign a vertical intermediate slip surface. Then activate the "Intermediate slip lines" switch in order to define the position of the intermediate slip line with the mouse.
You may even, after having specified polygonal slip bodies after "General wedge method", switch to the "Vertical slice method" or "Janbu" in the menu item "Editor 1/Analysis options", and carry out the calculations immediately after. The defined intermediate slip lines will then simply not be considered.