diff -r 5f63969a6707 -r c4ba40106d5d src/variables.h
--- a/src/variables.h	Mon Jan 15 18:28:27 2007 +0000
+++ b/src/variables.h	Mon Jan 15 22:18:35 2007 +0000
@@ -186,6 +186,7 @@
 	uint8 map_y;
 
 	byte drag_signals_density;          // many signals density
+	Year semaphore_build_before;        // Build semaphore signals automatically before this year
 	bool ainew_active;                  // Is the new AI active?
 	bool ai_in_multiplayer;             // Do we allow AIs in multiplayer