Valid search indicies for the us locale and the ean searchindex.
The default value is Books, unless mode is specified.
The list of available values are:
Actor Apparel Artist AudienceRating Author Availability Baby Beauty Blended Books Brand BrowseNode Classical Composer Condition Conductor Count DVD DeliveryMethod Director Electronics Format HealthPersonalCare HomeGarden ISPUPostalCode ItemPage Jewelry Keywords Kitchen MP3Downloads Magazines Manufacturer MaximumPrice MerchantId MinimumPrice Music MusicLabel MusicTracks OfficeProducts Orchestra OutdoorLiving Performer PostalCode Power Publisher ResponseGroup ReviewSort SearchIndex Shoes Software SoftwareVideoGames Sort State TagPage TagSort TagsPerPage TextStream Title Toys VHS Video VideoGames Watches