Scratch

http://scratch.mit.edu/projects/Molybdenum/2630970

After seeing scratch-o-matic by ericr*, I decided that that concept was interesting, and made my own (don't say copycat, "imagine, program, share"), but with slight modifications.

So the link and info is at the top, and you can share your interesting patterns here.

Then I thought about having a contest; who can find the best pattern?
So this thread is also a contest. To submit, your post must be in (or have a section with) this format:

My Pattern:
[instructions]
[optional comments]

Instructions is the instruction set at the top left. It must be from 6 to 20 commands. It should be in original form (ex. no erasing +-'s). Also, the pattern cannot periodicly collide with the wall (at the start while settling down is ok).

Please, no double spiral, straight line, or circle.

A voting thread will be opened when this topic has 30 posts, or I feel like a long time has passed.

This is my submission:

My Pattern:
MM+LMMLL-+----L+L-
Looks like a flower, has 6-rotational symmetry.