Update 'BackgroundType.cpp'

BackgroundType.cpp.md

@@ -1,10 +1,26 @@
 
-
 ## Global variables:
 
+*class BackgroundType{
+*protected:
+*public:
 
 
 # Classes
+### BackgroundType
+* **Private members:**
+* **Public  members:**
+    * bool bkgOneCB
+    * //Constrain PDFs
+* **Functions:**
+    * **RooArgSet \* BkgConsParameter = new RooArgSet()**
+        * **Parameters**
+            * );
+        * **Return**
+    * **RooArgList \* BkgConsPDF = new RooArgList()**
+        * **Parameters**
+            * );
+        * **Return**