diff --git a/CondIndependentTest.R b/CondIndependentTest.R
index fdb48e1..34f465b 100644
--- a/CondIndependentTest.R
+++ b/CondIndependentTest.R
@@ -1,3 +1,5 @@
+#This file is to test the conditional independence of two variable giving 2 parent set. Please read README file before first executing this code.
+
 CondIndTwoVar = 
   function (filename = "/home/zgong001/Documents/SprinklerDataset/sprinkler1001.txt", alphalevel = 0.05, methodu="x2", exfilename = "/home/zgong001/Documents/SprinklerDataset/pvalueSorted(sprinkler).xlsx"){
     library(bnlearn)