--- a/main.hh	Sun Nov 30 10:26:31 2014 +0000
+++ b/main.hh	Sun Nov 30 10:27:28 2014 +0000
@@ -40,6 +40,7 @@
 
 typedef struct {
    /* options specific to stage1_2 */
+	bool pre_parsing;              /* Support forward references (Run a pre-parsing phase before the defintive parsing phase that builds the AST) */
 	bool safe_extensions;          /* support SAFE_* datatypes defined in PLCOpen TC5 "Safety Software Technical Specification - Part 1" v1.0 */
 	bool full_token_loc;           /* error messages specify full token location */
 	bool conversion_functions;     /* Create a conversion function for derived datatype */