--- ray/src/util/trad.hlp	1994/11/01 14:38:31	2.3
+++ ray/src/util/trad.hlp	1994/12/06 13:00:26	2.8
@@ -1,9 +1,9 @@
-	$Id: trad.hlp,v 2.3 1994/11/01 14:38:31 greg Exp $
+	$Id: trad.hlp,v 2.8 1994/12/06 13:00:26 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
-each screen.  There are currently seven such screens:  Action, File,
-Options, Results, Scene, Views and Zone.
+each screen.  There are currently seven such screens:  File, Scene,
+Zone, Views, Options, Action and Results.
 
 .Trad.Intro
 
@@ -48,6 +48,8 @@ the left mouse button while holding the control key ov
 curiosity in the main trad window.
 (In general, only active windows are given help file links -- click
 on these rather than the text labels.)
+Additional search capabilities are available over all topics using
+the "Grep" button.
 
 For help on the help facility itself, Control-click on the problem
 help widget or on the window title in the upper right corner for
@@ -55,12 +57,6 @@ more general information.
 (To get back to trad-specific help, press the "HELP" button in the
 main trad window or Control-click on a trad widget.)
 
-Once the help window has been displayed, it is usually best to
-lower or iconify it rather than dismissing it if further help is
-needed.
-This way, you will not have to wait for the help file to be read in
-all over again every time you have a question.
-
 .Trad.Messages
 
 Informative messages, commands executed by rad, and errors
@@ -648,7 +644,7 @@ In particular, make sure that each option and each arg
 space between it and whatever follows.
 
 Hitting return in the "Options" window is equivalent to pressing the
-"Add" button.
+"Add" button followed by the "Clear" button.
 
 .Views.Add
 
@@ -1059,6 +1055,12 @@ just to the right.
 Other views may be accessed within rview using the "L name"
 command, and new views can be added with the "V name"
 command.
+
+When using the "V" command to change an existing view, do not
+give it a name because the previous view will not be overridden.
+Instead, give it a new name (or no name, which will show up as
+a number later), then use the Views screen to override the previous
+view definition with the new one.
 (See the rview(1) man page and the "View" topic in the current
 help category for more information.)
 
@@ -1075,6 +1077,11 @@ rendering, selects the view or views to render in batc
 If the special entry "ALL" is selected, then every view in the
 current list will be rendered if it hasn't been already.
 
+The view menu next to the "rview" button will be disabled if there
+is only one view to choose from.
+The view menu next to the "Start" button will be disabled if there
+is a batch job in progress, and thus the view cannot be changed.
+
 The batch rendering view menu also selects the view or views
 to use in producing a script during a dry run.
 
@@ -1095,11 +1102,17 @@ disabled, and rendering progress can be monitored by c
 the error file periodically.
 (This file is named by the root of the rad input file followed by
 ".err".)
-When a batch process is started or already running, this button
-will be disabled.
+When a batch process is started or already running, or when a
+process is on another host and its status is unknown,
+this button will be disabled.
 
 The background process can be killed during this or later
 invocations of trad using the "Kill" button.
+If the process was started on another machine and the status is unknown,
+it will be necessary to run trad from the other host or remove the error
+file manually before starting a background process on this machine.
+This is to protect you from the great confusion that results when two
+machines are working from the same project file.
 
 .Action.Kill
 
@@ -1114,7 +1127,7 @@ screen, no data is lost by killing and restarting a ba
 rendering, though some new startup costs will be incurred.
 
 The "Kill" button is disabled if no running batch process is
-detected.
+detected on the current host machine.
 
 .Action.CheckErr
 
