--- ray/src/util/trad.hlp	1995/02/21 14:27:06	2.10
+++ ray/src/util/trad.hlp	1995/08/28 10:12:35	2.13
@@ -1,4 +1,4 @@
-	$Id: trad.hlp,v 2.10 1995/02/21 14:27:06 greg Exp $
+	$Id: trad.hlp,v 2.13 1995/08/28 10:12:35 greg Exp $
 
 This help file is associated with the trad interface to the Radiance
 rad(1) program.  Trad consists of trad.wsh and one do_*.tcl file for
@@ -569,15 +569,15 @@ An invented name should be kept as short as possible, 
 added to the picture file name along with the standard ".pic" suffix.
 
 The standard views are specified by strings of the form
-"[Xx]?[Yy]?[Zz]?[vlah]?".
+"[Xx]?[Yy]?[Zz]?[vlahc]?".
 (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, A or H.)
+followed by an optional lower case V, L, A, H or C.)
 The letters indicate the desired view position, where upper case "X"
 means maximum X, lower case "y" means minimum Y and so on.
 The final letter is the view type, where 'v' is perspective (the
-default), 'l' is parallel, 'a' is angular fisheye, and 'h' is
-hemispherical fisheye.
+default), 'l' is parallel, 'a' is angular fisheye, 'h' is
+hemispherical fisheye and 'c' is for cylindrical panorama.
 A perspective view from maximum X, minimum Y would be "Xy" or
 "Xyv".
 A parallel view from maximum Z would be "Zl".
@@ -618,8 +618,9 @@ interaction mode for trad.
 Consult the rpict(1) manual page for a full description of the various
 view options, all of which begin with "-v".
 Just briefly, the "-vt?" option sets the view type, where "?" is
-replaced by one of the letters "v, l, a or h", corresponding to
-perspective, parallel, angular and hemispherical fisheye, respectively.
+replaced by one of the letters "v, l, a, h or c", corresponding to
+perspective, parallel, angular fisheye, hemispherical fisheye
+and cylindrical panorama, respectively.
 The "-vp x y z" option sets the view position (eyepoint), where "x y z"
 is replaced by the position in 3-space.
 The "-vd xd yd zd" option sets the view direction, where "xd yd zd"
@@ -744,6 +745,41 @@ Normally, either the X or the Y resolution is reduced 
 to maintain a specific pixel aspect ratio (1 by default).
 
 The default value for this variable is "512".
+
+.Views.Rawfile
+
+The "Rawfile" entry window determines if and where the raw output picture
+from rpict will be saved.
+If the entry is empty, the file will be removed after rendering and
+filtering.
+This is the normal action, since the raw file
+takes up disk space and is not generally useful.
+However, if you wish to perform some special filtering function,
+this file can be renamed instead of removed by giving a
+root file name in this entry window.
+The final name in this case will be the given root plus and
+underscore plus the view name followed by a ".pic" suffix.
+
+In the special case when the raw file name and picture file name are
+the same, the raw file is saved and no filtering takes place.
+
+.Views.Zfile
+
+The "Zfile" entry window gives the root name of the file in which to
+store the raw (binary floating point) distances to pixels in the
+original generated image.
+If this entry is empty, then no z-file will be saved.
+
+The final z-file name will be the given root plus an underscore plus
+the view name plus a ".zbf" suffix.
+
+To convert this image to human-readable form, the program "od" will
+work on some systems, or the Radiance "pvalue" program may be used
+to first convert it to a greyscale Radiance picture using the
+options "-r -h -b -df `getinfo -d < pictname`" where "pictname" is
+replaced by the raw picture file name.
+(Getinfo simply gets the original image dimensions, which are not
+stored in the z-file.)
 
 .Views.Copy
 
