diff --git a/TMVA-Class-application.md b/TMVA-Class-application.md
index b879817..5ddf219 100644
--- a/TMVA-Class-application.md
+++ b/TMVA-Class-application.md
@@ -1,15 +1,27 @@
+The MVA response is calculated by the [ROOT TMVA](https://root.cern.ch/download/doc/tmva/TMVAUsersGuide.pdf) in `TMVAClassApp.cpp`.
 
+## Table of Contents
 
-
+* [Functions and their parameters:](#functions-and-their-parameters)
+    * [string InputToReader()](#string-inputtoreader)
+    * [Int_t TMVAClassificationApplication_b2kmm()](#int_t-tmvaclassificationapplication_b2kmm)
+    * [Int_t TMVAClassAppData()](#int_t-tmvaclassappdata)
+    * [Int_t TMVAClassAppMC()](#int_t-tmvaclassappmc)
+    * [Int_t TMVAClassAppRefMC()](#int_t-tmvaclassapprefmc)
+    * [Int_t TMVAClassAppPHSP()](#int_t-tmvaclassappphsp)
+    * [Int_t TMVAClassAppInc()](#int_t-tmvaclassappinc)
+    * [Int_t TMVAClassAppAll()](#int_t-tmvaclassappall)
+      * 
 # Functions and their parameters:
 ### string InputToReader()
-
+Gets the `ReaderName` (from the InputVariables) and changes it into a name stripped of the ':=' part. This is needed in order to add the variables into the [TMVA::Reader](https://root.cern.ch/doc/v606/classTMVA_1_1Reader.html).
 * **Parameters**
     * string ReaderName
 * **Return**
+    * Stripped `ReaderName` string
 
 ### Int_t TMVAClassificationApplication_b2kmm()
-
+Calculates the MVA response for each event and saves the response in a new tuple. The MVA response is calculated using the xml file generated by [[MVA.cpp|MVA Class]]. The splitting and the input variables must be exactly the same (variables even in the same order) as in the MVA training! The variables are read from [[TMVA_variables_KplusPi0Resolved.txt|Input-MVA-variables]]. 
 * **Parameters**
     * Int_t Run = 1
     * Int_t year = 2011
@@ -20,39 +32,51 @@
     * bool UseLowQ2Range = false
     * bool IncSample = false
 * **Return**
+    * 0 if something fails, otherwise 1
 
 ### Int_t TMVAClassAppData()
-
+Calls [TMVAClassificationApplication_b2kmm()](#int_t-tmvaclassificationapplication_b2kmm) for data each year (and both DD and LL).
 * **Parameters**
     * Int_t Run
 * **Return**
+    * 0 if something fails, otherwise 1
 
 ### Int_t TMVAClassAppMC()
+Calls [TMVAClassificationApplication_b2kmm()](#int_t-tmvaclassificationapplication_b2kmm) for signal MC each year (and both DD and LL).
 
 * **Parameters**
     * Int_t Run
 * **Return**
+    * 0 if something fails, otherwise 1
 
 ### Int_t TMVAClassAppRefMC()
+Calls [TMVAClassificationApplication_b2kmm()](#int_t-tmvaclassificationapplication_b2kmm) for reference MC each year (and both DD and LL).
+
 
 * **Parameters**
     * Int_t Run
 * **Return**
+    * 0 if something fails, otherwise 1
 
 ### Int_t TMVAClassAppPHSP()
+Calls [TMVAClassificationApplication_b2kmm()](#int_t-tmvaclassificationapplication_b2kmm) for PHSP MC each year (and both DD and LL).
 
 * **Parameters**
     * Int_t Run
 * **Return**
+    * 0 if something fails, otherwise 1
 
 ### Int_t TMVAClassAppInc()
+Calls [TMVAClassificationApplication_b2kmm()](#int_t-tmvaclassificationapplication_b2kmm) for Inclusive MC each year (and both DD and LL).
 
 * **Parameters**
     * Int_t Run
 * **Return**
+    * 0 if something fails, otherwise 1
 
 ### Int_t TMVAClassAppAll()
-
+Calls TMVAClassApp for data, signal MC, reference MC and PHPS MC.
 * **Parameters**
     * Int_t Run = 1
 * **Return**
+    * 0 if something fails, otherwise 1