S moves the pointer to the right, but it gives you a fake syntax error while it does the command anyway. It was referenced from Sashley's right eye, which is black with a purple X in it.
A moves the pointer to the left.
H increments the memory cell under the pointer.
L decrements the memory cell under the pointer.
E outputs the character signified by the cell at the pointer.
Y inputs a character and store it in the cell at the pointer.
Since the word sashley has 2 S's, sahley is used. That means [ and ] can be still used.
Syntax error - JUST KIDDING: Hello World!