Index: src/SynTree/Expression.h
===================================================================
--- src/SynTree/Expression.h	(revision 5b544a6a33b882680dc245c678d32ddb6742f4a2)
+++ src/SynTree/Expression.h	(revision dcf1979e45c41e88b207d2bab3d2cca8bc5a10d8)
@@ -206,5 +206,15 @@
   public:
 	Expression * arg;
-	bool isGenerated = true; // cast generated implicitly by code generation or explicit in program
+
+	// Inidicates cast is introduced by the CFA type system.
+	// true for casts that the resolver introduces to force a return type
+	// false for casts from user code
+	// false for casts from desugaring advanced CFA features into simpler CFA
+	// example
+	//   int * p;     // declaration
+	//   (float *) p; // use, with subject cast
+	// subject cast isGenerated means we are considering an interpretation with a type mismatch
+	// subject cast not isGenerated means someone in charge wants it that way
+	bool isGenerated = true;
 
 	CastExpr( Expression * arg, bool isGenerated = true );