(svn r22405) -Document: some more "random-ish" tidbits

src/vehicle_type.h

@@ -14,6 +14,7 @@
 
 #include "core/enum_type.hpp"
 
+/** The type all our vehicle IDs have. */
 typedef uint32 VehicleID;
 
 /** Available vehicle types. */
@@ -28,6 +29,7 @@ enum VehicleType {
 	VEH_INVALID = 0xFF, ///< Non-existing type of vehicle.
 };
 DECLARE_POSTFIX_INCREMENT(VehicleType)
+/** Helper information for extract tool. */
 template <> struct EnumPropsT<VehicleType> : MakeEnumPropsT<VehicleType, byte, VEH_TRAIN, VEH_END, VEH_INVALID, 3> {};
 /** It needs to be 8bits, because we save and load it as such */
 typedef SimpleTinyEnumT<VehicleType, byte> VehicleTypeByte;