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<h2>About the Proof General project</h2>
<p>
The forefather of Proof General was LEGO mode, begun in 1994 at the <a
-href="http://www.dcs.ed.ac.uk/lfcs">LFCS</a> by Thomas Kleymann. LEGO
+href="http://www.lfcs.informatics.ed.ac.uk">LFCS</a> by Thomas Kleymann. LEGO
mode was an Emacs-based front end for LEGO similar to David Aspinall's
-<a href="http://zermelo.dcs.ed.ac.uk/~isamode">Isamode</a>,
+<a href="http://www.proofgeneral.org/~isamode">Isamode</a>,
developed at the LFCS since 1992. After 1994, implementations of
proof-by-pointing and script management were added to LEGO mode, and
the code was made generic. The generic basis was developed by
@@ -22,7 +22,7 @@ EPSRC,
<!-- </a>, -->
the <a
href="http://www.dcs.ed.ac.uk/lfcs/research/types_bra/index.html">EC</a>,
-and the <a href="http://www.dcs.ed.ac.uk/lfcs">LFCS</a>.
+and the <a href="http://www.lfcs.informatics.ed.ac.uk">LFCS</a>.
</p>
<p>