6b3c3152___Object_Search_Engine_Mapping__Description
[Attribute] exclude-from-all (optional, defaults to no) [Description] 
Excludes the class property from participating in the "all" meta-data, unless specified in the meta-data level. If set to no_analyzed, not_analyzed properties will be analyzed when added to the all property (the analyzer can be controlled using the analyzer attribute).
Chapter 6. OSEM - Object/Search Engine Mapping
Description