LoLShield grid numbering

I plan on getting a LoLShield and I didn't know where the coordinate (0,0) or if it starts there, (1,1), is on the grid. I know that usually screens start at the upper-left, but I was wondering if this is the same for the LoLShield.

Any input would likely help.

If it turns out not to be the upper, left, just rotate the Arduino.

Ok, well I would still need to modify the code I've written to accommodate for the direction changes, and I also need to know if it begins at (0,0) or (1,1).