Many is the time that you will want to attach a PDF or other file to your primary PDF document before sending it on or for archival purposes. For instance, you may want to attach a copy of the document's original source file, companion documents or other related materials. Luckily, the PDF format allows for just this, via Acrobat 7's attachment features.
Using Acrobat, select Document > Attach a File and then browse to choose your appropriate file. Once you have added your attachment, the 'Attachments' panel will automatically open at the bottom of screen.
All done! To attach another file, simply repeat the process.
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.