+Following is a list of slots of the structure:
+
+rcnum reversed content-number (list)
+point-min beginning point of region in raw-buffer
+point-max end point of region in raw-buffer
+type media-type (symbol)
+subtype media-subtype (symbol)
+type/subtype media-type/subtype (string or nil)
+parameters parameter of Content-Type field (association list)
+encoding Content-Transfer-Encoding (string or nil)
+children entities included in this entity (list of content-infos)
+
+If an entity includes other entities in its body, such as multipart or
+message/rfc822, entity-infos of other entities are included in
+`children', so entity-info become a tree.")
+(make-variable-buffer-local 'mime-raw-entity-info)
+
+(defvar mime-preview-buffer nil
+ "MIME preview buffer corresponding with the (raw) buffer.")
+(make-variable-buffer-local 'mime-preview-buffer)