--- a/mojoshader.h	Thu Oct 28 03:42:12 2010 -0400
+++ b/mojoshader.h	Mon Nov 01 02:20:37 2010 -0400
@@ -1499,7 +1499,7 @@
     /*
      * The actual syntax tree. You are responsible for walking it yourself.
      *  CompilationUnits are always the top of the tree (functions, typedefs,
-     *  global variables, etc).
+     *  global variables, etc). Will be NULL on error.
      */
     const MOJOSHADER_astNode *ast;