diff --git a/Gazelle-HL7V2-Simulators/user.md b/Gazelle-HL7V2-Simulators/user.md
index 008357325dd7d4b01dbd49f18fa12e0213786a7c..84b3084d122391c6509414b03389a0aae5e41958 100755
--- a/Gazelle-HL7V2-Simulators/user.md
+++ b/Gazelle-HL7V2-Simulators/user.md
@@ -77,7 +77,7 @@ All Template available are gathered in the tool. You can either create, edit or
 ## Browse Preference
 
 There are 4 fields that define a preference:
-   -PreferenceName : define the name a of a preference
+   - PreferenceName : define the name a of a preference
    - ClassName: define the type of value contain by the preference
    - PreferenceValue: define the value of a preference
    - Description: describe  how is use the preference
@@ -90,14 +90,19 @@ It will display the list of Preference :
 
 All Preference available are gathered in the tool. You can either create, edit or delete one.
 
+Preferences enable to custom the working of the application there are 3 things that can be custom.
+   Endpoint_Validator: The validation Endpoint to define which HL7 validator should be used.
+   Manager_Name, Manager_Host, Manager_Application, Manager_Facility, Manager_Port	:The configuration of the manager
+   Creator_Name, Creator_Host ,Creator_Application , Creator_Port:The configuration of the creator
+
+
 # Creator
 
 The Creator Simulator simulate the transmission of a Clinical Document Architecture (CDA) to a receiving application.
 
 There are two things that must be configured before sending a message.
-First a message should have a destination, so the creator need a Configuration SUT to be selected this will represent the destination where you want the message to be send.
-It is possible to use default local configuration to test simulators between them but to send to an external application, its configuration SUT must be added on the Configuration SUT browser.
-Once the configuration SUT needed is set it can be selected with this dropdown on the Creator UI.
+First a message should have a destination, so the creator need a Configuration SUT to be selected this will represent the destination where you want the message to be sent.
+It is possible to use default  configuration ,but it  can be custom on the preferences' menu.
 
 ![](./media/HL7v2Creator_SelectDropdown.png)
 
@@ -107,7 +112,6 @@ Once the needed template is set it can be selected with dropdown on the creator
 
 ![](./media/HL7V2Creator_TemplateDropdown.png)
 
-Before using the creator be sure that the SUT Configuration name local_creator_configuration is correctly define.    
 For sending the receiving application Configuration must have been insert in the configuration list.  
 On the Creator GUI before sending, a Configuration Receiver and a Template must have been selected.  
 Once the message is sent the message history print messages who have been send and receive including ACK/NACK AND ZAM.  1
@@ -117,7 +121,6 @@ Once the message is sent the message history print messages who have been send a
 ## Manager
 
 The manager is easier to use because it's just a server that can be started/stopped.
-Before using the manager be sure that the SUT Configuration name local_manager_configuration is correctly define.  
 For replying ZAM the manager must have all required ZAM templates. See TEMPLATE section for details.  
 For replying ZAM the manger should also have the configuration SUT defined of the sender. Else the manager cannot know where to send ZAM ( because ACK with HAPI is automatic).  
 For starting the server manager just go to the Manger GUI and press the start button.