1 files changed, 8 insertions, 2 deletions

diff --git a/src/include/extractor.h b/src/include/extractor.h
index 3e6c098..9f24735 100644
--- a/src/include/extractor.h
+++ b/src/include/extractor.h
@@ -35,7 +35,7 @@ extern "C" {
  * 0.2.6-1 => 0x00020601
  * 4.5.2-0 => 0x04050200
  */
-#define EXTRACTOR_VERSION 0x01080001
+#define EXTRACTOR_VERSION 0x010B0000
 
 #include <stdio.h>
 
@@ -124,8 +124,14 @@ enum EXTRACTOR_MetaFormat
  */
 enum EXTRACTOR_MetaType
 {
-  /* fundamental types */
+  /* available to application for marking an `enum EXTRACTOR_MetaType` as not
+     carrying any meaningful value - never used by libextractor */
+  EXTRACTOR_METATYPE_NONE = -1,
+
+  /* reserved should be used as a terminator (like the '\0'-terminator for strings)
+     and is never used directly by libextractor */
   EXTRACTOR_METATYPE_RESERVED = 0,
+
   EXTRACTOR_METATYPE_MIMETYPE = 1,
   EXTRACTOR_METATYPE_FILENAME = 2,
   EXTRACTOR_METATYPE_COMMENT = 3,