Given the ease with which online content can be updated, linking to web pages from within PDF documents can be a great way to provide access to the most up-to-date information. It's easy to do, too. This tip explains how.
Select the Link Tool (Tools > Link Tool).
Drag the mouse over the appropriate area of the page to create your link.
Choose Link Action > Open a web page.
Enter the web address (e.g. 'http://www.planetpdf.com/') and click OK.
OK, so you want to stamp your document. Maybe you need to give reviewers some advice about the document's status or sensitivity. This tip from author Ted Padova demonstrates how to add stamps with the Stamp Tool along with related comments.