--- ray/doc/man/man1/ra_xyze.1	2003/03/11 19:20:21	1.1
+++ ray/doc/man/man1/ra_xyze.1	2007/09/04 17:36:40	1.4
@@ -1,4 +1,4 @@
-.\" RCSid "$Id"
+.\" RCSid "$Id: ra_xyze.1,v 1.4 2007/09/04 17:36:40 greg Exp $"
 .TH RA_XYZE 1 5/30/96 RADIANCE
 .SH NAME
 ra_xyze - convert between RADIANCE RGBE and XYZE formats
@@ -9,6 +9,8 @@ ra_xyze - convert between RADIANCE RGBE and XYZE forma
 ][
 .B "\-e exposure"
 ][
+.B \-o
+][
 .B \-c
 |
 .B \-u
@@ -29,6 +31,11 @@ The
 .I \-e
 option specifies an exposure compensation, which may be given as
 a decimal multiplier or in f-stops (powers of two).
+The
+.I \-o
+option may be used to specify original units, to which the exposure
+compensation is applied.
+Otherwise, the multiplier is in addition to any previous exposure adjustment.
 By default,
 .I ra_xyze
 produces a flat XYZE RADIANCE picture file from any type of RADIANCE
@@ -44,7 +51,9 @@ The
 .I \-r
 option causes
 .I ra_xyze
-to produce a run-length encoded RGBE file instead.
+to produce a run-length encoded RGBE file instead, unless
+.I \-u
+is given, also, when it will produce a flat RGBE file.
 The
 .I \-p
 option may be used to override the standard RADIANCE RGB primary
@@ -92,11 +101,11 @@ To convert RGBE output from
 .I rpict(1)
 into run-length encoded XYZE format:
 .IP "" .2i
-rpict [options] scene.oct | ra_xyze -c > scene_xyz.pic
+rpict [options] scene.oct | ra_xyze \-c > scene_xyz.pic
 .PP
 To prepare a RADIANCE picture for display on a calibrated NTSC monitor:
 .IP "" .2i
-ra_xyze -r -p .670 .330 .210 .710 .140 .080 .333 .333 stand.pic ntsc.pic
+ra_xyze \-r \-p .670 .330 .210 .710 .140 .080 .333 .333 stand.pic ntsc.pic
 .SH AUTHOR
 Greg Ward
 .SH BUGS