gpainter,
Our document review basically involved me sitting down with the auditor for a day and walking him through our procedures. We have a quality manual (which I believe is about 20-30 pages - not all text, though), the six required procedures, and ten "process SOPs" which outline the main core processes at our facility. Other than that, we have the lower-level SOPs that are more department/process-specific, and then work instructions. He looked mainly at the manual, the six required, and the ten process. No findings.
Keep in mind that the intent of the documentation review ("desk audit") is to ensure that your documentation meets the requirements of the standard. Basically, as long as you have a quality manual that details the three points in 4.2.2, and the six procedures that are required - and as long as any other procedures that you have do not violate anything stipulated in the standard, you're aces.
Cheers,
-R.