http://code.google.com/apis/searchappliance/documentation/610/xml_reference.html http://code.google.com/apis/searchappliance/documentation/61... is a reference

http://code.google.com/apis/searchappliance/documentation/610/xml_reference.html http://code.google.com/apis/searchappliance/documentation/61... is a reference for our search appliance, but a lot of parameters are in common. I'm not aware of any other official Google doc available externally, but if you search for [google search url parameters] the top 3-4 results are all quite good.