--- a/src/table/sprites.h	Thu Jun 12 16:30:41 2008 +0000
+++ b/src/table/sprites.h	Thu Jun 12 18:51:35 2008 +0000
@@ -132,6 +132,7 @@
 	SPR_CANALS_BASE   = SPR_SIGNALS_BASE + PRESIGNAL_SEMAPHORE_AND_PBS_SPRITE_COUNT,
 	CANALS_SPRITE_COUNT = 65,
 
+	/* Sprites for the Aqueduct. */
 	SPR_AQUEDUCT_BASE     = SPR_CANALS_BASE + CANALS_SPRITE_COUNT,
 	SPR_AQUEDUCT_RAMP_SW  = SPR_AQUEDUCT_BASE + 0,
 	SPR_AQUEDUCT_RAMP_SE  = SPR_AQUEDUCT_BASE + 1,
@@ -143,10 +144,11 @@
 	SPR_AQUEDUCT_PILLAR_Y = SPR_AQUEDUCT_BASE + 7,
 	AQUEDUCT_SPRITE_COUNT = 8,
 
+	/* Sprites for 'highlighting' tracks on sloped land. */
  	SPR_TRACKS_FOR_SLOPES_BASE        = SPR_AQUEDUCT_BASE + AQUEDUCT_SPRITE_COUNT,
-	SPR_TRACKS_FOR_SLOPES_RAIL_BASE   = SPR_AQUEDUCT_BASE + 0,
-	SPR_TRACKS_FOR_SLOPES_MONO_BASE   = SPR_AQUEDUCT_BASE + 4,
-	SPR_TRACKS_FOR_SLOPES_MAGLEV_BASE = SPR_AQUEDUCT_BASE + 8,
+	SPR_TRACKS_FOR_SLOPES_RAIL_BASE   = SPR_TRACKS_FOR_SLOPES_BASE + 0,
+	SPR_TRACKS_FOR_SLOPES_MONO_BASE   = SPR_TRACKS_FOR_SLOPES_BASE + 4,
+	SPR_TRACKS_FOR_SLOPES_MAGLEV_BASE = SPR_TRACKS_FOR_SLOPES_BASE + 8,
 	TRACKS_FOR_SLOPES_SPRITE_COUNT = 12,
 
 	SPR_SLOPES_BASE              = SPR_TRACKS_FOR_SLOPES_BASE + TRACKS_FOR_SLOPES_SPRITE_COUNT,