Some cleanup, and a way to do on-the-fly generation

articles/main.md

@@ -0,0 +1,3 @@
+# Welcome
+
+This is the main page.  It uses markdown to edit.

wiki.php

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+<?php
+
+$page= $_GET['page'];
+
+print "<html><body>";
+echo ( shell_exec("/usr/bin/pandoc $page.md") );
+print "</body></html>";
+?>