diff --git a/include/ChangeLog b/include/ChangeLog
index 64f6e1fbd..f153061e3 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,8 @@
+2010-03-05  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	* elf/common.h (VER_FLG_*): Document.
+	(VER_FLG_INFO): Define.
+
 2010-02-08  David S. Miller  <davem@davemloft.net>
 
 	* elf/sparc.h (R_SPARC_JMP_IREL, R_SPARC_IRELATIVE): Define.
diff --git a/include/elf/common.h b/include/elf/common.h
index e7ffac4b7..6bad0d93c 100644
--- a/include/elf/common.h
+++ b/include/elf/common.h
@@ -812,10 +812,16 @@
 #define VER_DEF_CURRENT		1
 
 /* These constants appear in the vd_flags field of a Elf32_Verdef
-   structure.  */
+   structure.
+
+   Cf. the Solaris Linker and Libraries Guide, Ch. 7, Object File Format,
+   Versioning Sections, for a description:
+
+   http://docs.sun.com/app/docs/doc/819-0690/chapter6-93046?l=en&a=view  */
 
 #define VER_FLG_BASE		0x1
 #define VER_FLG_WEAK		0x2
+#define VER_FLG_INFO		0x4
 
 /* These special constants can be found in an Elf32_Versym field.  */