diff --git a/docs/diamagent.rst b/docs/diamagent.rst
index 89b94b816..23e6b1e69 100644
--- a/docs/diamagent.rst
+++ b/docs/diamagent.rst
@@ -183,16 +183,16 @@ Config params
 Most of the parameters are explained in :ref:`configuration <engine_configuration>`, hence we mention here only the ones where additional info is necessary or there will  be particular implementation for *DiameterAgent*.
 
 
-listen_net
+**listen_net**
 	The network the *DiameterAgent* will bind to. CGRateS supports both **tcp** and **sctp** specified in Diameter_ standard.
 
-concurrent_requests
+**concurrent_requests**
 	The maximum number of active requests processed at one time by the *DiameterAgent*. When this number is reached, new inbound requests will be rejected with *DiameterError* code until the concurrent number drops bellow again. The default value of *-1* imposes no limits.
 
-asr_template
+**asr_template**
 	The template (out of templates config section) used to build the AbortSession message. If not specified the ASR message is never sent out.
 
-templates
+**templates**
 	Group fields based on their usability. Can be used in both processor templates as well as hardcoded within CGRateS functionality (ie *\*err* or *\*asr*). The IDs are unique, defining the same id in multiple configuration places/files will result into overwrite.
 
 	*\*err*: is a hardcoded template used when *DiameterAgent* cannot parse the incoming message. Aside from logging the error via internal logger the message defined via *\*err* template will be sent out.
@@ -201,7 +201,7 @@ templates
 
 	*\*cca*: defined for convenience to follow the standard for the fields used in *Diameter* *CCA* messages.
 
-request_processors
+**request_processors**
 	List of processor profiles applied on request/replies. 
 
 	Once a request processor will be matched (it's *filters* should match), the *request_fields* will be used to craft a request object and the flags will decide what sort of procesing logic will be applied to the crafted request. 
@@ -212,8 +212,8 @@ request_processors
 	Once the *reply_fields* are finished, the object converted and returned to the *DiameterClient*, unless *continue* flag is enabled in the processor, which makes the next request processor to be considered.
 
 
-filters
-	Will specify a list of filter rules which need to match in order for the processor to run. These are also available within fields.
+processor or field **filters**
+	Will specify a list of filter rules which need to match in order for the processor to run (or field to be applied).
 
 	For the dynamic content (prefixed with *~*) following special variables are available:
 
@@ -246,7 +246,7 @@ filters
 	* **\*cgrareq**
 		Active request in relation to CGRateS side. It can be used in both *request_fields*, referring to CGRRequest object being built, or in *reply_fields*, referring to CGRReply object.
 
-flags
+processor **flags**
 	Special tags enforcing the actions/verbs done on a request. There are two types of flags: **main** and **auxiliary**. 
 
 	There can be any number of flags or combination of those specified in the list however the flags have priority one against another and only some simultaneous combinations of *main* flags are possible. 
@@ -301,4 +301,50 @@ flags
 		Build a CDR out of the request on CGRateS side. Can be used simultaneously with other flags (except *\*dry_run)
 
 
+field **path**
+	Specifies the path where the value will be written. Possible values:
 
+	* **\*cgreq**
+		Write the value in the request object which will be sent to CGRateS side.
+
+	* **\*req**
+		Write the value to request built by *DiameterAgent* to be sent out on *Diameter* side.
+
+	* **\*rep**
+		Write the value to reply going out on *Diameter* side.
+
+field **type**
+	Specifies the logic type to be used when writing the value of the field. Possible values:
+
+	* **\*none**
+		Pass
+
+	* **\*filler**
+		Fills the values with an empty string
+
+	* **\*constant**
+		Writes out a constant
+
+	* **\*remote_host**
+		Writes out the Address of the remote *DiameterClient* sending us the request
+
+	* **\*variable**
+		Writes out the variable value, overwriting previous one set
+
+	* **\*composed**
+		Writes out the variable value, postpending to previous value set
+
+	* **\*usage_difference**
+		Calculates the usage difference between two arguments passed in the *value*. Requires 2 arguments: *$stopTime;$startTime*
+
+	* **\*cc_usage**
+		Calculates the usage out of *CallControl* message. Requires 3 arguments: *$reqNumber;$usedCCTime;$debitInterval*
+
+	* **\*sum**
+		Calculates the sum of all arguments passed within *value*. It supports summing up duration, time, float, int autodetecting them in this order.
+
+	* **\*difference**
+		Calculates the difference between all arguments passed within *value*. Possible value types are (in this order): duration, time, float, int.
+
+	* **\*value_exponent**
+		Calculates the exponent of a value. It requires two values: *$val;$exp*
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