diff --git a/teckids.sty b/teckids.sty
index 78883cc3c5436e8cbbd56dc9ec08ffbcbeb2bf85..09886c2546ecf9c1e5b077c99a927b9c35bfc1c7 100644
--- a/teckids.sty
+++ b/teckids.sty
@@ -48,6 +48,8 @@
 \widowpenalty10000
 \displaywidowpenalty=10000
 
+\newcommand\0{\scalebox{-1}[1]{0}}
+
 \DeclareGraphicsExtensions{.pdf,.eps,.png,.jpg}
 
 \setlength{\parskip}{0.3cm}
@@ -192,5 +194,6 @@
         keywordstyle=\color[rgb]{0,0,1},
         commentstyle=\color[rgb]{0.133,0.545,0.133},
         stringstyle=\color[rgb]{0.627,0.126,0.941},
+	literate={0}{\0}1{0\ }{\0\ }2,
 }
 }