1/2 L-step -- do only the first 4 counts, ending the L at the side of the bench.
Across the board -- self explanitory
Skip around the bench -- go around the front of the bench to the back (basicly 3/4 around the bench). Do not turn to face the bench as if you were going to do a basic, end standing with the bench to your side so you are ready to do the A-steps.
A-step -- self explainitory
With the repeater simply tap down at the end instead of going to the other corner of the bench and start the 1/2-L on the same side you did the repeater. So if you did the repeater on the left side then you would tap down and do the 1/2-L on the same side. This makes it self repeating!