diff -ur a/visual_regexp.tcl b/visual_regexp.tcl
--- a/visual_regexp.tcl	2013-11-10 01:49:14.987065220 +0100
+++ b/visual_regexp.tcl	2013-11-10 01:49:04.177341077 +0100
@@ -740,10 +740,13 @@
 	frame .help.text;
 
 	if {$tcl_platform(platform) == "windows"} {
-		text .help.text.t -borderwidth 2 -relief groove -font {Courier 10} -yscrollcommand [list .help.text.sy set];
+        set hfont {Courier 10}
+        set hbfont {Courier 10 bold}
 	} else {
-		text .help.text.t -borderwidth 2 -relief groove -yscrollcommand [list .help.text.sy set];
+        set hfont {9x15}
+        set hbfont {9x15bold}
 	}
+    text .help.text.t -borderwidth 2 -relief groove -font $hfont -yscrollcommand [list .help.text.sy set];
 
 	scrollbar	.help.text.sy \
 		-command			".help.text.t yview" \
@@ -755,10 +758,10 @@
 
 	pack .help.text -side top -fill both -expand 1 -padx 20
 
-	.help.text.t tag configure bold -font "[.help.text.t cget -font] bold"
+	.help.text.t tag configure bold -font $hbfont
 	.help.text.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