--- ray/doc/man/man1/rad.1	2008/03/11 02:21:45	1.6
+++ ray/doc/man/man1/rad.1	2008/12/18 23:26:57	1.8
@@ -1,4 +1,4 @@
-.\" RCSid "$Id: rad.1,v 1.6 2008/03/11 02:21:45 greg Exp $"
+.\" RCSid "$Id: rad.1,v 1.8 2008/12/18 23:26:57 greg Exp $"
 .TH RAD 1 2/1/99 RADIANCE
 .SH NAME
 rad - render a RADIANCE scene
@@ -371,7 +371,7 @@ The default value is 0.
 .BR PICTURE
 This is the root name of the output picture file(s).
 This name will have appended the view identifier (or a number if no
-id was used) and a ".pic" suffix.
+id was used) and a ".hdr" suffix.
 If a picture corresponding to a specific view exists and is not out
 of date with respect to the given octree, it will not be
 re-rendered.
@@ -472,6 +472,8 @@ There is no default value for this variable.
 .BR oconv
 This variable may be used to specify special options to
 .I oconv.
+If the first word of the first instance of this variable is not an option,
+it will be used in place of the default command path, "oconv".
 See the
 .I oconv(1)
 manual page for a list of valid options.
@@ -479,6 +481,8 @@ manual page for a list of valid options.
 .BR mkillum
 This variable may be used to specify additional options to
 .I mkillum.
+If the first word of the first instance of this variable is not an option,
+it will be used in place of the default command path, "mkillum".
 See the
 .I rtrace(1)
 manual page for a list of valid options.
@@ -492,9 +496,29 @@ These options will appear after the options set automa
 .I rad,
 and thus will override the default values.
 .TP
+.BR rpict
+This variable may be used to specify overriding options specific to
+.I rpict.
+If the first word of the first instance of this variable is not an option,
+it will be used in place of the default command path, "rpict".
+See the
+.I rpict(1)
+man page for a list of valid options.
+.TP
+.BR rvu
+This variable may be used to specify overriding options specific to
+.I rvu.
+If the first word of the first instance of this variable is not an option,
+it will be used in place of the default command path, "rvu".
+See the
+.I rvu(1)
+man page for a list of valid options.
+.TP
 .BR pfilt
 This variable may be used to specify additional options to
 .I pfilt.
+If the first word of the first instance of this variable is not an option,
+it will be used in place of the default command path, "pfilt".
 See the
 .I pfilt(1)
 manual page for details.
@@ -567,7 +591,7 @@ DET= low		# default was medium - our space is almost e
 PEN= True		# we want to see soft shadows from our window
 VAR= hi		# daylight can result in fairly harsh lighting
 view= XYa \-vv 120	# let's try a fisheye view
-PICT= tutor		# our picture name will be "tutor_XYa.pic"
+PICT= tutor		# our picture name will be "tutor_XYa.hdr"
 .fi
 .PP
 Note the use of abbreviations, and the modification of a standard