diff --git a/README.md b/README.md
index 3b78ba8..6c45004 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ ______
 ###[2 sample test]
 * The "Sample A" and "Sample B": sample inputs (available data is csv formatted numerical array).
 * "Run" button; it runs three statistical tests(F-test, t-test, and U-test) with two given sample(Sample A and Sample B),  
-  and outputs the test result.
+  and outputs the test result as the upper probabilities.
 * "Clear" button; it clears the test results by "Run" button.
 * "Output as email" button; it saves the test results by "Run" button as email to given address.
 
@@ -30,7 +30,12 @@ ______
 * "Sample": sample input (available data is csv formatted numerical array).
 * "Resampling from": sample input to be resampled in bootstrap method (available data is csv formatted numerical array).
 * "Time of simulation"; it sets how many times the sample and resampled data are tested.
-* 
+* "Significance level"; it sets a statistical significance level (0-1) in order to test if  
+  the null hypothesis (no difference) is rejected.
+* "Run" button; it runs three statistical tests(F-test, t-test, and U-test) with the given sample and resampled data,  
+  and outputs the test result: and detailed the upper probabilities.
+* "Clear" button; it clears the test results by "Run" button.
+* "Output as email" button; it saves the test results by "Run" button as email to given address.
 
 ##Library list
 * statDist.js (Yuji SODE,2016): the Artistic License or the GPL v1 or later; https://github.com/YujiSODE/statDist