--- a/GCMS/combine_output.xml	Fri Mar 20 17:11:04 2015 +0100
+++ b/GCMS/combine_output.xml	Mon Mar 23 08:40:42 2015 +0100
@@ -15,13 +15,13 @@
     <data format="tabular" label="${tool.name} (Multi) on ${on_string}" name="out_multi" />
   </outputs>
   <help>
-Performs a combination of output files from the 'RankFilter' and 'Lookup RI for CAS' tools into two tab-separated files.
+Performs a combination of given 'RankFilter' and 'Lookup RI for CAS' files into two tab-separated files.
 
-Merges data from both input dictionaries based on the Centrotype field.
+This combination is a merge of the given files based on the Centrotype field.
 In the 'RIQC-RankFilter output' the centrotype is found in the 'ID' field (first part before the "-"). In the 'RIQC-Lookup RI for CAS output'
 the centrotype is found in the 'Centrotype' field. 
 
-The files produced are contain either all hits for a compound on a single line (Single) or on separate lines 
+The files produced contain either all hits for a compound on a single line (Single) or on separate lines 
 (Multi). 
 
 .. class:: infomark