How does the claw work?

Hint 1 of 4:

The claw moves along a track in the ceiling.

Hint 2 of 4:

It can be moved back and forth as well as from side to side.

Hint 3 of 4:

The controls are located on a platform at the top of the ramp.

Hint 4 of 4:

Using the controls, the claw will grab a block from the floor, lift it up,
and move it across to the other side.