(svn r6144) -Codechange: renamed OrderID to VehicleOrderID, because it had nothing to do

with the Order-pool, but with the place of the order within the vehicle-order 
 (hence its name) (part of FS#13, blathijs)

openttd.h

@@ -42,7 +42,7 @@ typedef uint16 IndustryID;
 typedef uint16 DepotID;
 typedef uint16 WaypointID;
 typedef byte PlayerID;
-typedef byte OrderID;
+typedef byte VehicleOrderID;  ///< The index of an order within its current vehicle (not pool related)
 typedef byte CargoID;
 typedef byte LandscapeID;
 typedef uint16 StringID;