In P3D image data are used for two different purposes:
The images can be loaded from the Menu with Load Input, from the DB Load page or using the button the taskbar to the right.
Note that several images can be loaded at once. It is also possible to incrementally load additional images later on. To do so, the append pushpin below the button should be activated to enter the append mode . The format of the loaded images can be changed with the small button.