diff --git a/README.md b/README.md
index 37faa70..ea33150 100644
--- a/README.md
+++ b/README.md
@@ -81,6 +81,8 @@ The second phenotype has index 1, the third index 2 and so forth...
 Use this flag to reduce runtime to test for the best possible value for `-blockSize`
 This will not create ANY results!
 
+## Further explanations on flags
+
 `-blockSize`:
 If you are familiar with CUDA, you know what it is about. Otherwise you needn't get too deep into this.
 All you need to know is that this parameter has to be found by trial and error.