diff --git a/docs/FunctionDescriptions.md b/docs/FunctionDescriptions.md
index e06b0c4a6ef6c00c392205ad046d6d0e13691a49..39564cde13ae3e37c082cd833f3c698463d72533 100644
--- a/docs/FunctionDescriptions.md
+++ b/docs/FunctionDescriptions.md
@@ -1,5 +1,6 @@
 # Implemented QC functions
 
+Main documentation of the implemented functions, their purpose and parameters and their description.
 
 ## range