--- ray/src/util/trad.hlp	1994/12/02 14:02:12	2.6
+++ ray/src/util/trad.hlp	1994/12/06 13:00:26	2.8
@@ -1,4 +1,4 @@
-	$Id: trad.hlp,v 2.6 1994/12/02 14:02:12 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
@@ -1077,6 +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.
 
@@ -1097,11 +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
 
@@ -1116,7 +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