checkpoint initial inc content

Details of how this content will be used is found in part,
in the `/inc/README.md` file and in part in the tools that
will use this content.

The content of this directory will likely change soon.
This content is a placeholder.

inc/sidenav.default.html

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+<!-- START: this line start content from: /inc/sidenav.default.html -->
+
+    <div class="sidenav">
+      <a href="#content">Jump to contents</a>
+    </div>
+    <hr>
+    <div class="sidenav">
+      <a href="%%DOCROOT_URL_SLASH%%index.html">IOCCC Home</a>
+      <a href="%%DOCROOT_URL_SLASH%%years.html">Winning Entries</a>
+      <a href="%%DOCROOT_URL_SLASH%%winners.html">People who have won</a>
+    </div>
+    <hr>
+    <div class="sidenav">
+      <a href="%%DOCROOT_URL_SLASH%%news.html">IOCCC News</a>
+      <a href="%%DOCROOT_URL_SLASH%%judges.html">The IOCCC Judges</a>
+      <a href="%%DOCROOT_URL_SLASH%%contact.html">Contacting the IOCCC</a>
+      <a href="%%DOCROOT_URL_SLASH%%faq.html">FAQ</a>
+    </div>
+    <hr>
+    <div class="sidenav">
+      <a href="%%DOCROOT_URL_SLASH%%faq.html#fix_a_winner">Fixing IOCCC winners</a>
+      <a href="%%DOCROOT_URL_SLASH%%faq.html#fix_web_site">Fixing the web site</a>
+      <a href="%%DOCROOT_URL_SLASH%%bugs.html">Bugs &amp; (mis)features</a>
+      <a href="%%DOCROOT_URL_SLASH%%thanks-for-fixes.html">Thanks for the fixes</a>
+    </div>
+    <hr>
+    <div class="sidenav">
+      <a href="#top">Jump to top</a>
+    </div>
+  </div>
+
+<!-- END: this line ends content from: /inc/sidenav.default.html -->