--- a/ttd.h	Tue May 10 08:45:55 2005 +0000
+++ b/ttd.h	Wed May 11 00:00:27 2005 +0000
@@ -65,6 +65,8 @@
 typedef struct Industry Industry;
 typedef struct DrawPixelInfo DrawPixelInfo;
 typedef uint16 VehicleID;
+typedef byte PlayerID;
+typedef byte OrderID;
 typedef uint16 StringID;
 typedef uint16 SpriteID;
 typedef uint32 PalSpriteID;