diff -ur a/visual_regexp.tcl b/visual_regexp.tcl
--- a/visual_regexp.tcl	2013-11-10 01:35:49.959609478 +0100
+++ b/visual_regexp.tcl	2013-11-10 01:34:10.491151352 +0100
@@ -494,15 +494,18 @@
 	pack .help.l -side top -padx 10 -pady 10
 	# help text
 	if {$tcl_platform(platform) == "windows"} {
-		text .help.t -bd 2 -relief groove -font {Courier 10}
+        set hfont {Courier 10}
+        set hbfont {Courier 10 bold}
 	} else {
-		text .help.t -bd 2 -relief groove
+        set hfont {9x15}
+        set hbfont {9x15bold}
 	}
+    text .help.t -bd 2 -relief groove -font $hfont
 	pack .help.t -side top -padx 20
-	.help.t tag configure bold -font "[.help.t cget -font] bold"
+	.help.t tag configure bold -font $hbfont
 	.help.t insert 1.0 "Version:" bold " $::version
 
-" normal "Usage:" bold " tkregexp <sampleFile>
+" normal "Usage:" bold " [file tail $::argv0] <sampleFile>
 
 " normal "Key bindings:" bold " Alt-q               exit
               Alt-a               toggle 'all' flag