This tool, with the symbol
, allows you to draw a drainage pit on the Main Window.
When you select it, the arrow cursor changes to a pencil. Click the point of the pencil where you wish to locate the pit and the pit symbol and a name will appear. (You can enter several pits by holding down the shift key as you click. If you enter one by mistake, click it, then press the right mouse button and select Delete)
To enter data, right-click the chosen pit symbol to open a pop-up menu. Selecting Edit Data from this opens the Pit property sheet.