(svn r11107) -Feature: some tool so one can still build tunnels under rails (and other structures) when the owner of the structure built it on foundations and if you have enough "empty" space ofcourse. One could use the tool for some other construction needs too. Patch by frosch.

src/variables.h

@@ -240,6 +240,8 @@ struct Patches {
 
 	bool timetabling;        ///< Whether to allow timetabling.
 	bool timetable_in_ticks; ///< Whether to show the timetable in ticks rather than days.
+
+	bool autoslope;          ///< Allow terraforming under things.
 };
 
 VARDEF Patches _patches;