diff --git a/templates/normal/experiment.cpp b/templates/normal/experiment.cpp
index c193453..b47c076 100644
--- a/templates/normal/experiment.cpp
+++ b/templates/normal/experiment.cpp
@@ -39,6 +39,10 @@ struct timestamps {
     int core_id = 0;
 };
 
+/**
+ * Make place to store timestamps of any running task instance.
+ */
+
 base_clock::time_point start;
 base_clock::time_point end;
 std::vector<timestamps> benchmark[taskset_length];