Open working papers PDF attachments and SF360 simultaneously

It is good that the PDF documents open without downloading from working papers, it is a good feature. However it would be great if the PDF documents can be opened as a new window so we can continue to work with working papers simultaneously. CaseWare audit application has this feature which is very helpful.
At present we have to save our documents in the hard disk so we can open them in a separate window then we have to remember to save them in SF360 which means more errors can happen.