In the LSCS_7.4.1_TechRef_en.pdf, under the section "Content Deployment Configuration" the following paragraph appears
Content Extraction
If an extended attribute named proxyFullTextContent is present, its value will be used as the asset content for simple queries. Otherwise, the asset content is extracted from the file. Asset content is only extracted from UTF-8 documents
I am just wondering if any one has turn this on and the results. My research has not discovered any more information on this feature. I am also asking HP support for more information on it and I am turning it on in my dev intance to see it working.