From 1ca9df2aa3528936c8d14b8d869ff3fb9ca00003 Mon Sep 17 00:00:00 2001
From: Norbert Klawikowski <norbert.klawikowski@tu-dresden.de>
Date: Mon, 23 Nov 2009 17:13:50 +0000
Subject: [PATCH] added a variable parser which checks also for existance of
 variables

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