diff --git a/gamedir/Data-1.13/TableData/MapAction/ActionItems.xml b/gamedir/Data-1.13/TableData/MapAction/ActionItems.xml
index e783a7f65..3fd6bc677 100644
--- a/gamedir/Data-1.13/TableData/MapAction/ActionItems.xml
+++ b/gamedir/Data-1.13/TableData/MapAction/ActionItems.xml
@@ -2,7 +2,47 @@
 
 <!--
 
-BombItem :
+This file defines the different action items from JA2 and UB.
+The actions for those action items are triggered in the LUA script file "Scripts\ExplosionControl.lua"
+
+Name:
+	The name of the action which is displayed in the Map Editor.
+	Max. 29 characters.
+
+ActionID:
+	*** JA2-Actions ***
+	ACTION_ITEM_OPEN_DOOR 				- 1
+	ACTION_ITEM_CLOSE_DOOR				- 2
+	ACTION_ITEM_BLOW_UP					- 3
+	ACTION_ITEM_SMALL_PIT				- 4
+	ACTION_ITEM_LARGE_PIT				- 5
+	ACTION_ITEM_TOGGLE_DOOR				- 6
+	ACTION_ITEM_TOGGLE_ACTION1			- 7
+	ACTION_ITEM_TOGGLE_ACTION2			- 8
+	ACTION_ITEM_TOGGLE_ACTION3			- 9
+	ACTION_ITEM_TOGGLE_ACTION4			- 10
+	ACTION_ITEM_ENTER_BROTHEL			- 11
+	ACTION_ITEM_EXIT_BROTHEL			- 12
+	ACTION_ITEM_KINGPIN_ALARM			- 13
+	ACTION_ITEM_SEX						- 14
+	ACTION_ITEM_REVEAL_ROOM				- 15
+	ACTION_ITEM_LOCAL_ALARM				- 16
+	ACTION_ITEM_GLOBAL_ALARM			- 17
+	ACTION_ITEM_KLAXON					- 18
+	ACTION_ITEM_UNLOCK_DOOR				- 19
+	ACTION_ITEM_TOGGLE_LOCK				- 20
+	ACTION_ITEM_UNTRAP_DOOR				- 21
+	ACTION_ITEM_TOGGLE_PRESSURE_ITEMS	- 22
+	ACTION_ITEM_MUSEUM_ALARM,			- 23
+	ACTION_ITEM_BLOODCAT_ALARM			- 24
+	*** UB-Actions ***
+	ACTION_ITEM_BIGGENS_BOMBS			- 25
+	ACTION_ITEM_BIGGENS_WARNING			- 26
+	ACTION_ITEM_SEE_FORTIFIED_DOOR		- 27
+	ACTION_ITEM_OPEN_FORTIFED_DOOR		- 28
+	ACTION_ITEM_SEE_POWER_GEN_FAN		- 29
+
+BombItem:
 	STUN_GRENADE 			- 241	
 	TEARGAS_GRENADE			- 242
 	MUSTARD_GRENADE			- 243
@@ -13,7 +53,6 @@ BombItem :
 	HMX						- 248
 	C1						- 249
 	MORTAR_SHELL			- 250
-
 	MINE					- 251
 	C4						- 252
 	TRIP_FLARE				- 253
@@ -24,7 +63,6 @@ BombItem :
 	GL_TEARGAS_GRENADE		- 258
 	GL_STUN_GRENADE			- 259
 	GL_SMOKE_GRENADE		- 260
-
 	SMOKE_GRENADE 			- 261
 	TANK_SHELL				- 262
 	STRUCTURE_IGNITE		- 263
@@ -36,13 +74,15 @@ BombItem :
 	LARGE_CREATURE_GAS		- 269
 	VERY_SMALL_CREATURE_GAS - 270
 	
-	BombItem używamy tylko w połączeniu z Blow_up = 1. 
-	
-	Blow_up - 1/0. Jeżeli ustawimy Blow_up = 1 to parametr ActionID ustawiamy na 3.
-	ActionID - 1 -255
-	Name - Nazwa
+Blow_up:
+	Set to 1 if it should trigger an explosion, otherwise 0
+
+BombItem:
+	If you set Blow_up to 1, you also have to set the bomb item type.
+	If you set Blow_up to 0, you can delete the <BombItem> tag.
 	
 !-->
+
 <ACTION_ITEM_LIST>
 	<ACTION_ITEM>
 		<uiIndex>0</uiIndex>
diff --git a/gamedir/Data/TableData/MapAction/ActionItems.xml b/gamedir/Data/TableData/MapAction/ActionItems.xml
index e783a7f65..3fd6bc677 100644
--- a/gamedir/Data/TableData/MapAction/ActionItems.xml
+++ b/gamedir/Data/TableData/MapAction/ActionItems.xml
@@ -2,7 +2,47 @@
 
 <!--
 
-BombItem :
+This file defines the different action items from JA2 and UB.
+The actions for those action items are triggered in the LUA script file "Scripts\ExplosionControl.lua"
+
+Name:
+	The name of the action which is displayed in the Map Editor.
+	Max. 29 characters.
+
+ActionID:
+	*** JA2-Actions ***
+	ACTION_ITEM_OPEN_DOOR 				- 1
+	ACTION_ITEM_CLOSE_DOOR				- 2
+	ACTION_ITEM_BLOW_UP					- 3
+	ACTION_ITEM_SMALL_PIT				- 4
+	ACTION_ITEM_LARGE_PIT				- 5
+	ACTION_ITEM_TOGGLE_DOOR				- 6
+	ACTION_ITEM_TOGGLE_ACTION1			- 7
+	ACTION_ITEM_TOGGLE_ACTION2			- 8
+	ACTION_ITEM_TOGGLE_ACTION3			- 9
+	ACTION_ITEM_TOGGLE_ACTION4			- 10
+	ACTION_ITEM_ENTER_BROTHEL			- 11
+	ACTION_ITEM_EXIT_BROTHEL			- 12
+	ACTION_ITEM_KINGPIN_ALARM			- 13
+	ACTION_ITEM_SEX						- 14
+	ACTION_ITEM_REVEAL_ROOM				- 15
+	ACTION_ITEM_LOCAL_ALARM				- 16
+	ACTION_ITEM_GLOBAL_ALARM			- 17
+	ACTION_ITEM_KLAXON					- 18
+	ACTION_ITEM_UNLOCK_DOOR				- 19
+	ACTION_ITEM_TOGGLE_LOCK				- 20
+	ACTION_ITEM_UNTRAP_DOOR				- 21
+	ACTION_ITEM_TOGGLE_PRESSURE_ITEMS	- 22
+	ACTION_ITEM_MUSEUM_ALARM,			- 23
+	ACTION_ITEM_BLOODCAT_ALARM			- 24
+	*** UB-Actions ***
+	ACTION_ITEM_BIGGENS_BOMBS			- 25
+	ACTION_ITEM_BIGGENS_WARNING			- 26
+	ACTION_ITEM_SEE_FORTIFIED_DOOR		- 27
+	ACTION_ITEM_OPEN_FORTIFED_DOOR		- 28
+	ACTION_ITEM_SEE_POWER_GEN_FAN		- 29
+
+BombItem:
 	STUN_GRENADE 			- 241	
 	TEARGAS_GRENADE			- 242
 	MUSTARD_GRENADE			- 243
@@ -13,7 +53,6 @@ BombItem :
 	HMX						- 248
 	C1						- 249
 	MORTAR_SHELL			- 250
-
 	MINE					- 251
 	C4						- 252
 	TRIP_FLARE				- 253
@@ -24,7 +63,6 @@ BombItem :
 	GL_TEARGAS_GRENADE		- 258
 	GL_STUN_GRENADE			- 259
 	GL_SMOKE_GRENADE		- 260
-
 	SMOKE_GRENADE 			- 261
 	TANK_SHELL				- 262
 	STRUCTURE_IGNITE		- 263
@@ -36,13 +74,15 @@ BombItem :
 	LARGE_CREATURE_GAS		- 269
 	VERY_SMALL_CREATURE_GAS - 270
 	
-	BombItem używamy tylko w połączeniu z Blow_up = 1. 
-	
-	Blow_up - 1/0. Jeżeli ustawimy Blow_up = 1 to parametr ActionID ustawiamy na 3.
-	ActionID - 1 -255
-	Name - Nazwa
+Blow_up:
+	Set to 1 if it should trigger an explosion, otherwise 0
+
+BombItem:
+	If you set Blow_up to 1, you also have to set the bomb item type.
+	If you set Blow_up to 0, you can delete the <BombItem> tag.
 	
 !-->
+
 <ACTION_ITEM_LIST>
 	<ACTION_ITEM>
 		<uiIndex>0</uiIndex>