[otrs] View source of e-mail

Hi all! I've upgraded my OTRS 2.2 to 3.0.5 and now got puzzled, how in the new interface to get look onto the plain text source of the certain e-mail in the ticket, including all the transition headers? Something like what was known as "Plain text mail view": http://otrs.org/images/screen-3.0/email-plain.png Before there was a link "(plain)" next in the zoom view from where you could get that mail source text. With the new interface with the default settings I don't see anything like this, only RTF view. Can somebody point me how can I get such a view or what modules or options have to be enabled to get it? With regards, Timur Bakeyev.