Design Master
The Design Master allows selecting an image that will be displayed as background image in the camera view in order to help on editing.
- Enable this feature by checking the checkbox "Enable" and then selecting the desired image from the existing images of the solution (previous imported images).
- After that all 2D scenes will have the selected image set as default Design master.
- Change the image used as background for a specified scene by selecting a different image for the scene property "Design Master" from the Properties panel.

This feature can also be enabled by using the button placed near Active Rendering.
