From 8b8483d5af13a38a01a6e3f6f1d38620c9e50679 Mon Sep 17 00:00:00 2001
From: Norbert Klawikowski <norbert.klawikowski@tu-dresden.de>
Date: Tue, 8 Sep 2009 17:19:44 +0000
Subject: [PATCH] remove Exception class, replaced with stl classes;
 reorganized representation of operators and corresponding widgets

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