Document management - preview of documents

Hi,
I would like to ask if there is a particular reason for not having document preview in document management application?
In project- risk- action-etc. management, it it possible to preview attached pdf and html files.
Thanks!

Great!
ProjeQtOr might become our principal management software, for project management, document - action - risk - bug/incident - management.
Therefore I'm exploring possibilities to link to it from our Intranet.
One really cool feature would be a "reader only" interface for documents, accessible through a link directly to pdf/html previews (with user login).
We also like to navigate between documents using hyperlinks from one document to another. Currently we do this through the index of our Intranet,
but we don't have revision control and document validation through Intranet.
Do you think this is possible and do you find this feature interesting for future versions?
Best regards,
Pamela