This tool allows adjust the projection used for displaying objects in this view. It can also be selected temporarily or permanently by pressing
P or Shift + P, respectivelyon the keyboard.
The Projection can be orthogonal or perspective with freely adjustable foreshortening and displacment. To give an impression of the effects of the selected projection, a rotating cube is displayed as long as this tool is selected.
Hold the right button of the mouse and drag downwards to introduce perspective foreshortening and make the projection perspective. Drag upwards to diminish or turn off entirely perspective foreshortening.
Drag with the left button of the mouse to introduce or change perspective displacement. Double-click the left button of the mouse to entirely turn off perspective displacement immediately.