diff --git a/macros/CCEScan/pulseFit.C b/macros/CCEScan/pulseFit.C
index 75ea27b..11d7320 100755
--- a/macros/CCEScan/pulseFit.C
+++ b/macros/CCEScan/pulseFit.C
@@ -286,7 +286,8 @@
 
 
 
-  //MIchele - STart
+  //Evaluation of the systematic error on the integral of the pulse shape using a polinomial
+  //Define the interval were most likely the zeros should be
   double low_limit = -50;
   double high_limit = 50;
 
@@ -299,7 +300,7 @@
   ge_pulse->Fit("poly3","M");
   Info("pulseFit","#chi^{2}/ndf: %6.2f/%d",poly3->GetChisquare(),poly3->GetNDF());
 
-  double x1_poly3 = poly3->GetX(0,low_limit,0);
+  double x1_poly3 = poly3->GetX(0,low_limit,0); //GetX will return x* such that f(x*)=0 only if this exists, will (probably) return the argmin(f(x)) in the interval otherwis
   double x2_poly3 = poly3->GetX(0,0, high_limit);
   double z1_poly3 = -99;
   double z2_poly3 = -99;
@@ -453,7 +454,9 @@
                                        
 
   //Michele 3/9/2017
-  //Estimate the  systematics
+  //Estimate the  systematics: # if a polynomial with zeros is found take as sys the semidifference 
+  //                             between its integral and the integral obtained from the fitted theoretical model
+  //                           # if no polynomial behaved properly set the systematic error to -999
   double int_sys = -999.0;
   double b_int_sys = true;