diff --git a/BackgroundPdf.cpp.md b/BackgroundPdf.cpp.md
index f82008a..8cac299 100644
--- a/BackgroundPdf.cpp.md
+++ b/BackgroundPdf.cpp.md
@@ -1,11 +1,19 @@
 
-
-
 ## Global variables:
 
+*class BackgroundPdf: public ParamValues{
+*public:
 
 
 # Classes
+### BackgroundPdf: public ParamValues
+* **Private members:**
+* **Public  members:**
+* **Functions:**
+    * **groundPdf()**
+        * **Parameters**
+            * }; //default constructor
+        * **Return**