These related behaviours are an extension to the default behaviours that let you inset the layout bounds by a given number of pixels. This allows:
a) Shake can now work on the edges as there is an artificial edge that leaves some area available to shake back onto the screen.
b) Pathfinding to work outside of the visible boundaries. Pathfinding does not work if you place the find-points outside of the layout. This trick allows that to work.
20160424 update:
Bound To Layout Plus (v1.1) - Inset actions and expressions added.
Scroll To Plus (v1.3) - Inset actions and expressions added.
20160405 update:
Scroll To Plus (v1.2) - Enable added.
Sample CAPX (v1.2) - Enable added on two objects.
Archive:
Bound to layout Plus
Scroll To Plus (v1.1 - fix for r165+)
Sample CAPX