How to get your head around German wine

Here's a fabulous resource on German wine -- not to mention other regions covered. The winedoctor.com website has tasting notes, historical records, maps, producer profiles, etc.

Ever wondered what the terminology means, or how to decipher the AP code on your bottle of spatlese? Struggled to place the Nahe on a map? Wondered why the Mosel-Saar-Ruwer became just the Mosel, or what the heck QmP and QbA mean?