Index: pcb-rnd-svg.1.html
===================================================================
--- pcb-rnd-svg.1.html	(revision 31950)
+++ pcb-rnd-svg.1.html	(revision 31951)
@@ -48,7 +48,10 @@
 
 <H3>DESCRIPTION</H3>
 <blockquote>
-<B>pcb-rnd-svg</B> compares svg renders generated by pcb-rnd in a way that order of objects within the svg does not matter, only layering and geometry do. This is done by sorting group objects, assuming each object is a single line.
+<B>pcb-rnd-svg</B> compares svg renders generated by pcb-rnd in a way that order of objects within the svg does not matter, only layering and geometry do. This is done by sorting group objects, assuming each object is a single line. 
+<P>
+Note: stored reference files are of format boardname.ref or boardname.ref.gz if they are compressed.
+
 </blockquote>