--- a/devel-versioning.rst	Sun Sep 25 16:31:40 2011 +0300
+++ b/devel-versioning.rst	Sun Sep 25 17:54:32 2011 +0300
@@ -170,13 +170,17 @@
 Compile time or source compatibility mean that supplied header/interfaces allow
 successful compiling/linking.
 
-Example:
+Examples:
 
  * Change type of argument in method to more generic take source compatibility
    but break binary compatibility.
  * Adding new mothod to abstract class take binary compatibility but break
    compilation (unimplement method error).
 
+File format compatibility.
+
+Protocol compatibility.
+
 Compatibility formula.
 ======================