This command allows the user to align elements by rotating them without deformations in a single operation.
There are three ways to use Rotate to Target and this video just show one of them: rotate Point to Plane.
You can call it clicking on Rotate to Target command
using MMB (Middle Mouse Button).
Basicaly you have to:
(a) make a selection
(b) indicate the axis around which you will rotate the selection
(c) indicate the rotate reference point
(d) indicate a point at selection
(e) indicate a plane to which you will rotate the selection.