--- a/ttd.h	Mon Aug 16 22:35:17 2004 +0000
+++ b/ttd.h	Tue Aug 17 08:40:09 2004 +0000
@@ -207,6 +207,7 @@
 typedef struct TileDesc {
 	StringID str;
 	byte owner;
+	uint16 build_date;
 	uint32 dparam[2];
 } TileDesc;