--- ray/src/px/phisteq.csh	2005/02/16 05:40:11	3.3
+++ ray/src/px/phisteq.csh	2008/11/10 19:08:19	3.4
@@ -1,5 +1,5 @@
 #!/bin/csh -f
-# RCSid: $Id: phisteq.csh,v 3.3 2005/02/16 05:40:11 greg Exp $
+# RCSid: $Id: phisteq.csh,v 3.4 2008/11/10 19:08:19 greg Exp $
 set Ldmin=1		# minimum display luminance
 set Ldmax=100		# maximum display luminance
 set nsteps=100		# number of steps in perceptual histogram
@@ -12,7 +12,7 @@ set tf3=$td/histeq$$.cal
 set tf4=$td/cf$$.cal
 set tf=($tf1 $tf1b $tf2 $tf3 $tf4)
 if ( $#argv != 1 ) then
-	echo "Usage: $0 input.pic > output.pic"
+	echo "Usage: $0 input.hdr > output.hdr"
 	exit 1
 endif
 set ifile=$1