Message base configuration now stored in page 99999 of zone

tools/frames_list.js

@@ -12,6 +12,9 @@ if (argv.length !== 1) {
 var ma = new MsgAreas();
 var area = ma.getArea(argv[0]);
 
+if (area === undefined)
+	throw Error('Area:'+argv[0]+' is not defined.');
+
 writeln('Opening ['+argv[0]+'] - ('+area.code+')');
 
 var msgbase = area.msgbase;