--- a/galaxy-conf/GeneTrackToWig.xml	Mon Apr 09 11:50:23 2012 -0400
+++ b/galaxy-conf/GeneTrackToWig.xml	Wed Apr 25 16:53:48 2012 -0400
@@ -1,8 +1,9 @@
 <tool id="GeneTrackToWig" name="GeneTrack to Wig" version="1.0.0">
   <description>converter</description>
-  <command interpreter="sh">galaxyToolRunner.sh converters.GeneTrackToWig -i $input $zero -a ${chromInfo} -o $output</command>
+  <command interpreter="sh">galaxyToolRunner.sh converters.GeneTrackToWig -i $input -s $shift $zero -a ${chromInfo} -o $output</command>
   <inputs>
       <param name="input" type="data" format="genetrack" label="Input GeneTrack index" />
+      <param name="shift" type="integer" value="0" optional="true" label="Shift +/- strand counts by this amount when merging" />
   	  <param name="zero" type="boolean" checked="false" truevalue="-z" falsevalue="" label="Assume zero where there is no data (default is NaN)" />
   </inputs>
   <outputs>
@@ -10,9 +11,14 @@
   </outputs>
 	
 <help>
+  
+This tool will convert GeneTrack_ format files into Wig files, optionally offsetting the + and - strand counts by a specified value before merging them.
+
+.. _GeneTrack: http://atlas.bx.psu.edu/genetrack/docs/genetrack.html
 
 .. class:: warningmark
 	
 This tool requires GeneTrack formatted data. If you have tabular data that was not correctly autodetected, change the metadata by clicking on the pencil icon for the dataset.
+
 </help>
 </tool>