--- ray/doc/man/man1/pfilt.1	2005/02/16 05:40:06	1.3
+++ ray/doc/man/man1/pfilt.1	2007/09/04 17:36:40	1.4
@@ -1,4 +1,4 @@
-.\" RCSid "$Id: pfilt.1,v 1.3 2005/02/16 05:40:06 greg Exp $"
+.\" RCSid "$Id: pfilt.1,v 1.4 2007/09/04 17:36:40 greg Exp $"
 .TH PFILT 1 11/8/96 RADIANCE
 .SH NAME
 pfilt - filter a RADIANCE picture
@@ -69,7 +69,7 @@ Multiple exposure options have a cumulative effect.
 Color-balance the image as if it were illuminated by fixtures of
 the given type.
 The specification must match a pattern listed in the lamp
-lookup table (see the -f option below).
+lookup table (see the \-f option below).
 .TP
 .BR -f \ lampdat
 Use the specified lamp lookup table rather than the default (lamp.tab).