Timing belt marks for an 1992 Audi 100S?

[twilightahoy]

I'm working on a 1992 Audi 100S and I can't find anyone that'll help me find out or help me find where I can find the timing belt marks. I need to get the car done, but it'll take a week or two to get the book. any one able to help??
the machine shop pulled the cams so they're no longer in the heads.