--- ray/doc/man/man1/rad.1	2007/09/04 17:36:40	1.5
+++ ray/doc/man/man1/rad.1	2008/12/18 23:26:57	1.8
@@ -1,4 +1,4 @@
-.\" RCSid "$Id: rad.1,v 1.5 2007/09/04 17:36:40 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
@@ -295,7 +295,7 @@ command line option.
 Also, there are several standard view identifiers defined by
 .I rad.
 These standard views are specified by strings of the form
-"[Xx]?[Yy]?[Zz]?[vlcah]?".
+"[Xx]?[Yy]?[Zz]?[vlcahs]?".
 (That is, an optional upper or lower case X followed by an optional
 upper or lower case Y followed by an optional upper or lower case Z
 followed by an optional lower case V, L, C, A or H.)\0
@@ -303,7 +303,8 @@ The letters indicate the desired view position, where 
 means maximum X, lower case means minimum and so on.
 The final letter is the view type, where 'v' is perspective (the
 default), 'l' is parallel, 'c' is a cylindrical panorama,
-'a' is angular fisheye, and 'h' is hemispherical fisheye.
+'a' is angular fisheye, 'h' is hemispherical fisheye, and 's'
+is a planisphere (stereographic) fisheye.
 A perspective view from maximum X, minimum Y would be "Xy" or "Xyv".
 A parallel view from maximum Z would be "Zl".
 If "ZONE" is an interior zone, the standard views will
@@ -370,7 +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 If a picture corresponding to a specific view exists and is not out
 of date with respect to the given octree, it will not be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.
@@ -471,6 +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.
@@ -478,6 +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.
@@ -491,9 +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.
@@ -566,7 +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