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diff --git a/html/about.html b/html/about.html index 01c2393f..2c8e03db 100644 --- a/html/about.html +++ b/html/about.html @@ -17,7 +17,7 @@ list</a>. The forefather of Proof General was LEGO mode, begun in 1994 at the <a 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://www.proofgeneral.org/~isamode">Isamode</a>, +<a href="http://homepages.inf.ed.ac.uk/da/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 |