7. The Menus / 7.8 The Effects Menu
Vault drags a part of the active image up or down. Sphere modifies only that pixels, that lie inside the largest ellipse, which can be drawn inside the image. Whole Area drags the whole image, only the edges are fix.
On dragging it can happen, that parts of the image end outside of the image area. Size to Fit takes care, that in this case the result is scaled, so that all will be visible. Intensity controls how strong to drag.
Additionally it is possible to turn on lighting by using the switch Lighten. This way light and shadow effects are created. Edit... allows to modify the lighting. The light color, the shadow color and the position of the light source are adjustable.