diff --git a/teckids.sty b/teckids.sty
index 0c8a27d7ed373e22f2db3f5c0a18b35ca03fd8cb..aff7875f99f0887ce3e0c8b755813e33db9c0e81 100644
--- a/teckids.sty
+++ b/teckids.sty
@@ -43,6 +43,8 @@
 \RequirePackage{pxfonts}
 \renewcommand{\familydefault}{\sfdefault}
 
+\newcommand\0{\scalebox{-1}[1]{0}}
+
 \DeclareGraphicsExtensions{.pdf,.eps,.png,.jpg}
 
 \setlength{\parskip}{0.3cm}
@@ -187,5 +189,6 @@
         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,
 }
 }