Yes, moving in one spot. Its the prerequisite for many more moves to come.
The name is pretty self explanitory... hopping on the rear wheel, in a stationary spot; ie: on a rock, a ledge, rail, anything what have you.
More complex moves come into play with rear wheel hopping; ie: pedal kicking/ lurching (using a short burst of energy to the pedal while stationary, and body movement to launch you to another obstical)
I couldnt find any movies of a rearwheel hop, but these are pedal kicks/lurch's.. just to give you an idea.
Basic Lurch Verson.1
Log Gaps
Basic lurch Version.2