--- ray/doc/man/man1/vwrays.1	2007/09/04 17:36:41	1.5
+++ ray/doc/man/man1/vwrays.1	2011/08/16 02:22:50	1.7
@@ -1,4 +1,4 @@
-.\" RCSid "$Id: vwrays.1,v 1.5 2007/09/04 17:36:41 greg Exp $"
+.\" RCSid "$Id: vwrays.1,v 1.7 2011/08/16 02:22:50 greg Exp $"
 .TH VWRAYS 1 1/15/99 RADIANCE
 .SH NAME
 vwrays - compute rays for a given picture or view
@@ -90,8 +90,8 @@ otherwise, which would produce a uniform clipping dist
 .PP
 If a picture is given on the command line rather than a set of view options,
 then the view and image dimensions are taken from the picture file, and
-the reported ray origins and directions will exactly match the center of each
-pixel in the picture.
+the reported ray origins and directions will match the center of each
+pixel in the picture (plus optional jitter).
 .PP
 If a depth buffer file is given as well, then
 .I vwrays
@@ -105,7 +105,7 @@ for light rays leaving the scene surfaces to strike ea
 To compute the ray intersection points and returned directions corresponding
 to a picture and its depth buffer:
 .IP "" .2i
-vwrays scene_v2.pic scene_v2.zbf > scene_v2.pts
+vwrays scene_v2.hdr scene_v2.zbf > scene_v2.pts
 .PP
 To determine what the dimensions of a given view would be:
 .IP "" .2i
@@ -117,7 +117,7 @@ instead of
 .I rpict:
 .IP "" .2i
 vwrays \-ff \-vf view1.vf \-x 1024 \-y 1024 |
-rtrace `vwrays \-d \-vf view1.vf \-x 1024 \-y 1024` \-ffc scene.oct > view1.pic
+rtrace `vwrays \-d \-vf view1.vf \-x 1024 \-y 1024` \-ffc scene.oct > view1.hdr
 .SH AUTHOR
 Greg Ward Larson
 .SH ACKNOWLEDGMENT