diff --git a/doc/src/Splines/Splines.do.txt b/doc/src/Splines/Splines.do.txt
index 33a6423a3..13ea96c13 100644
--- a/doc/src/Splines/Splines.do.txt
+++ b/doc/src/Splines/Splines.do.txt
@@ -2,6 +2,8 @@ TITLE: Data Analysis and Machine Learning  Lectures: Optimization and  Gradient
 AUTHOR: Morten Hjorth-Jensen {copyright, 1999-present|CC BY-NC} at Department of Physics, University of Oslo & Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University
 DATE: today
 
+!split
+===== Optimization, the central part of any Machine Learning algortithm =====
 
     We will explain the general approach for minimizing a multi-variate
     function and set the terminology in this section.