Tutorial 3: There can be enclosed regions in the image which should remain transparent. In this case BG scribbles are useful even when initial BG scribble is already created using Create Layers (with BG) button. This tutorial demonstrates usage of BG scribbles to cut out holes. Background texture was used to better visualize transparency of the hole. Note that although the FG scribble does not go over the hole it will cause the hole to be opaque. Such a fill as much as possible feature is treated separately in Tutorial 7.