How to Set Ignition Timing on 1994 Toyota Corolla

Hi, I have a question about setting timing on a 1994 Toyota Corolla. Underhood label said it needs to be at 10 degree at idle. I have everything set up and in place to shoot timing. This is what the numbers show:  - 15 - 10 - 0.  I see the ignition timing numbers on the crankshaft cover and a white mark on the pulley. Am I supposed to align the white mark to 0 (at top dead center) or do I line it on the number 10? Thanks.