(svn r21493) -Codechange: don't use the full 32 bits of the level land command to tell whether to raise, lower or keep the level of the first selected tile

src/map_type.h

@@ -75,4 +75,11 @@ static const uint MAX_MAP_SIZE      = 1 << MAX_MAP_SIZE_BITS; ///< Maximal map s
  */
 #define STRAIGHT_TRACK_LENGTH 7071/10000
 
+/** Argument for CmdLevelLand describing what to do. */
+enum LevelMode {
+	LM_LEVEL, ///< Level the land.
+	LM_LOWER, ///< Lower the land.
+	LM_RAISE, ///< Raise the land.
+};
+
 #endif /* MAP_TYPE_H */