src/utils/wigSetSpanOrStep/wigSetSpanOrStep.c 1.2

Index: src/utils/wigSetSpanOrStep/wigSetSpanOrStep.c
===================================================================
RCS file: /projects/compbio/cvsroot/kent/src/utils/wigSetSpanOrStep/wigSetSpanOrStep.c,v
retrieving revision 1.1
retrieving revision 1.2
diff -b -B -U 4 -r1.1 -r1.2
--- src/utils/wigSetSpanOrStep/wigSetSpanOrStep.c	24 May 2010 18:09:14 -0000	1.1
+++ src/utils/wigSetSpanOrStep/wigSetSpanOrStep.c	25 May 2010 17:11:49 -0000	1.2
@@ -20,9 +20,9 @@
   "   wigSetSpanOrStep input.wig output.wig\n"
   "options:\n"
   "   -span=N set span variable to given value\n"
   "   -step=N set step variable to given value\n"
-  "either step or span should be used\n"
+  "Either step or span must be used with fixedStep format wigs,  only span with variableStep.\n"
   );
 }
 
 static struct optionSpec options[] = {