[otrs] send notification to customer about closed ticket.

hi, i am new to otrs, using otrs 2.3.4 on a CentOS 5.2 machine Is there an option somewhere in OTRS that sends out an e-mail (i.e. from the the notification master) to customer that informs the customer that his/her ticket has been closed with the note we have wrote when the ticket was closed. Thanks! -- regards: Amanpreet Singh