Index: App/Common.h
===================================================================
diff -u -r3470940824d26e0c43cb59ffdacfa4d9854096ae -rcb47c5f896477ceae7597cb1a4191b3972e93f0d
--- App/Common.h	(.../Common.h)	(revision 3470940824d26e0c43cb59ffdacfa4d9854096ae)
+++ App/Common.h	(.../Common.h)	(revision cb47c5f896477ceae7597cb1a4191b3972e93f0d)
@@ -55,6 +55,13 @@
     NUM_OF_SELF_TEST_STATUS
 } SELF_TEST_STATUS_T;
 
+typedef enum Two_Way_States
+{
+    STATE_CLOSED = 0,
+    STATE_OPEN,
+    NUM_OF_TWO_WAY_STATES
+} TWO_WAY_STATE_T;
+
 // **** Common Definitions ****
 
 #define NEARLY_ZERO              0.00001
@@ -65,6 +72,47 @@
 #define MAX(a,b)                 ((a) < (b) ? (b) : (a))
 #define MIN(a,b)                 ((a) > (b) ? (b) : (a))
 
+// **** Script Support Definitions ****
+
+#define OVERRIDE_KEY    0xCCC33C33
+#define OVERRIDE_RESET  0x00000000
+
+// DATA_DECL - declares an overrideable data variable
+// t        = data's type
+// t_name   = name for data's structure type
+// d_name   = name for data's variable
+// i_val    = data's initial value
+// o_val    = data's initial override value
+#define DATA_DECL( t, t_name, d_name, i_val, o_val ) \
+struct t_name \
+{ \
+    t   data; \
+    t   ovInitData; \
+    t   ovData; \
+    U32 override; \
+}; \
+static struct t_name d_name = { i_val, o_val, o_val, OVERRIDE_RESET }
+
+// DATA_GET_PROTOTYPE - declares a function prototype for a DATA getter function
+// t        = data's type
+// f_name   = name for DATA getter function
+#define DATA_GET_PROTOTYPE( t, f_name ) t f_name( void )
+
+// DATA_GET - creates a getter function for a DATA
+// t        = data's type
+// f_name   = name for DATA getter function
+// d_name   = name of data's variable
+#define DATA_GET( t, f_name, d_name ) \
+t f_name( void ) \
+{ \
+    t result = d_name.data; \
+    if ( OVERRIDE_KEY == d_name.override ) \
+    { \
+        result = d_name.ovData; \
+    } \
+    return result; \
+}
+
 // **** VectorCAST Definitions ****
 
 #ifdef _VECTORCAST_