--- a/src/industry.h	Sun Jul 01 17:11:24 2007 +0000
+++ b/src/industry.h	Sun Jul 01 17:21:25 2007 +0000
@@ -57,7 +57,7 @@
 	INDUSTRYBEH_ONLY_INTOWN           = 1 << 4,  ///< can only be built in towns (arctic/tropic banks, water tower)
 	INDUSTRYBEH_ONLY_NEARTOWN         = 1 << 5,  ///< is always built near towns (toy shop)
 	INDUSTRYBEH_PLANT_ON_BUILT        = 1 << 6,  ///< Fields are planted around when built (all farms)
-	INDUSTRYBEH_DONT_INCR_PROD        = 1 << 7,  ///< do not increase production (oil wells)
+	INDUSTRYBEH_DONT_INCR_PROD        = 1 << 7,  ///< do not increase production (oil wells) in the temperate climate
 	INDUSTRYBEH_BEFORE_1950           = 1 << 8,  ///< can only be built before 1950 (oil wells)
 	INDUSTRYBEH_AFTER_1960            = 1 << 9,  ///< can only be built after 1960 (oil rigs)
 	INDUSTRYBEH_AI_AIRSHIP_ROUTES     = 1 << 10, ///< ai will attempt to establish air/ship routes to this industry (oil rig)