--- ray/src/util/do_options.tcl	1994/10/27 15:56:07	2.1
+++ ray/src/util/do_options.tcl	1995/02/22 20:48:49	2.5
@@ -11,11 +11,11 @@ proc amb_delete {} {		# delete ambient file
 	}
 	set hl [string length [exec getinfo < $radvar(AMBFILE)]]
 	set fl [file size $radvar(AMBFILE)]
-	set nv [expr ($fl - $hl - 3) / 75]
-	if {$nv && [tk_dialog .dlg {Verification} \
+	set nv [expr ($fl - $hl - 2) / 75]
+	if {$nv > 50 && [tk_dialog .dlg {Verification} \
 				"Really delete ambient file $radvar(AMBFILE)\
-				with $nv indirect irradiances values?" \
-				questhead 1 {Delete} {Cancel}]} {
+				with $nv indirect irradiance values?" \
+				questhead 0 {Delete} {Cancel}]} {
 		return 0
 	}
 	if [catch {exec rm $radvar(AMBFILE) < /dev/null} curmess] {return 0}
@@ -109,7 +109,7 @@ proc do_options w {		# Set up options screen
 	place $w.revert -relwidth .1071 -relheight .0610 -relx .98 -rely .98 \
 			-anchor se
 	helplink $w.revert trad options revert
-	button $w.copy -text Copy -relief raised -command {getfile \
+	button $w.copy -text Copy -relief raised -command {getfile -grab \
 			-send copyopts -view view_txt -glob $rif_glob}
 	place $w.copy -relwidth .1071 -relheight .0610 -relx .98 -rely .90 \
 			-anchor se