diff --git a/config/delegates.xml.in b/config/delegates.xml.in
index ec69331..b20250c 100644
--- a/config/delegates.xml.in
+++ b/config/delegates.xml.in
@@ -54,6 +54,8 @@
     %x  input image x resolution
     %y  input image y resolution
 
+  Set option delegate:bimodal=true to process bimodal delegates otherwise they
+  are ignored.
 -->
 <delegatemap>
   <delegate decode="autotrace" stealth="True" command="&quot;@ConvertDelegate@&quot; &quot;%i&quot; &quot;pnm:%u&quot;\n&quot;@AutotraceDecodeDelegate@&quot; -input-format pnm -output-format svg -output-file &quot;%o&quot; &quot;%u&quot;"/>