I thought it meant "goto the bottom left corner" or "goto the top left corner then goto the bottom left corner." or "mark all legal tiles visited".

There's no hint in the help that you're suppose to goto the tile coordinate specified by the little box in the bottom left corner. I'm not even technically sure that's what the "f8" at the beginning is for since the help doesn't mention it.

Like move the Knight to every square on the board, in a certain order, but skipping some. I didn't notice the "f8" at the bottom until I read the comments.