diff --git a/gamedir-languages/Jagged Alliance 2 v1.13/Ja2.ini b/gamedir-languages/Jagged Alliance 2 v1.13/Ja2.ini
index ef3f1376e..4a94437f3 100644
--- a/gamedir-languages/Jagged Alliance 2 v1.13/Ja2.ini	
+++ b/gamedir-languages/Jagged Alliance 2 v1.13/Ja2.ini	
@@ -1,11 +1,44 @@
 [Ja2 Settings]
+
 CD=c
+
+;******************************************************************************************
+; The folder of the current mode you like to play, located in your JA2 directory.
+;******************************************************************************************
+
 CUSTOM_DATA_LOCATION=Data-1.13
-; -----------------------------------------
-; Select the screen resolution of the game
-;
+
+
+;******************************************************************************************
+; The screen resolution of the game.
 ; 0 ... 640x480
 ; 1 ... 800x600
 ; 2 ... 1024x768
-; -----------------------------------------
-SCREEN_RESOLUTION=1
+;******************************************************************************************
+
+SCREEN_RESOLUTION=2
+
+
+;******************************************************************************************
+; In this section you can enable the weather effects (rain & storms).
+; Enabled rain also includes new features to the game (e.g: visibility radius decrease when 
+; rainig, weapons reliability decreased when raining, possibility to spot the enemy at night
+; with lightning) 
+; For slow CPUs decrease the MAX_RAIN_DROPS, or disable rain (ALLOW_RAIN=0)
+;******************************************************************************************
+
+[JA2 Rain Settings]
+ALLOW_RAIN=				1
+RAIN_CHANCE_PER_DAY=			100
+RAIN_MIN_LENGTH_IN_MINUTES=		60
+RAIN_MAX_LENGTH_IN_MINUTES=		180
+MAX_RAIN_DROPS=				70
+
+[JA2 Thunder Settings]
+MIN_INTERVAL_BETWEEN_LIGHTNINGS_IN_REAL_TIME_SECONDS=				2
+MAX_INTERVAL_BETWEEN_LIGHTNINGS_IN_REAL_TIME_SECONDS=				15
+MIN_INTERVAL_BETWEEN_LIGHTNING_AND_THUNDERCLAPS_IN_SECONDS=			1
+MAX_INTERVAL_BETWEEN_LIGHTNING_AND_THUNDERCLAPS_IN_SECONDS=			5
+PROLOGNE_DELAY_IF_SEEN_SOMEONE_DURING_LIGHTNING_IN_TURNBASED_IN_SECONDS=	5
+CHANCE_TO_DO_LIGHTNING_BETWEEN_TURNS=						80
+