plugins/tutorial.md

@@ -62,4 +62,4 @@ this program. If not, see <http://www.gnu.org/licenses/>.
 3.  At the bottom add the copyright information. This should be the copyright of the program and not the copyright of the underlying theory (we will come to that). It should include the author who coded the program (and not the author of the theory behind it).
 
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-<div align="center">Prev: <a href="./plugins">Plug-ins</a> | Up: <a href="../">Intro</a> | Next: <a href="./interface_classes">Interface Classes</a></div>
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+<div align="center">Prev: — | Up: <a href="./plugins">Plug-ins</a> | Next: <a href="./interface_classes">Interface Classes</a></div>
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