Be more specific about the code used.

Author: janpgit

docs/index.html

@@ -142,9 +142,9 @@ <h2><a name="final_assignment">Final Lab Assignment</a></h2>
 implementation when you hand it over to us.  When you are done, send the link
 via email <b>to both of us</b> (see <a href="#contact">Contact</a> below).
 
-<p><b>It goes without saying it is an individual, not a team project.  You are not
-allowed to use code written by anybody else than you.  The idea is you learn by
-coding your own project.</b>
+<p><b>It goes without saying it is an individual, not a team project.  In your
+source code files, you are not allowed to use code written by anybody else than
+you.  The idea is you learn by coding your own project.</b>
 
 <p>See <a href="./class-assignments/extra-feedback.txt">extra feedback</a> based
 on what other students already handed over before you send it to us.