--- a/devel-versioning.rst	Mon Nov 28 00:01:06 2011 +0200
+++ b/devel-versioning.rst	Mon Nov 28 00:34:57 2011 +0200
@@ -346,8 +346,8 @@
 Forms of compatibility.
 =======================
 
-Runtime of binary compatibility mean that binary can be swaped with another
-version without breaking.
+Runtime or binary compatibility mean that binary can be swaped with another
+version without breaking normal program work.
 
 Compile time or source compatibility mean that supplied header/interfaces allow
 successful compiling/linking.
@@ -356,13 +356,15 @@
 
  * 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
+ * Adding new method to abstract class take binary compatibility but break
    compilation (unimplement method error).
 
 File format compatibility.
 
 Protocol compatibility.
 
+
+
 Reference.
 ==========