On 23/03/2012 07:49, stepney wrote: > Have a look at: > http://www.alanstepney.info/page24.html > > > Alan Thanks for the quick reply, just what I wanted. -- Brian MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.