it isn't possible to view PDF-Document in Teaming, isn't it?

Is there any documentation to the stellent package in Teaming? Why it
doesn't render PDF-Files?

At the other hand maybe it was a work-a-round if a click to the pdf would
start the local pdf-Viewer and shows that document. But the the download
dialog appears. Is this a MIME-Setting? How can i change this?