Adobe ACROBAT READER 7.0 Manual page 137

Viewing the security settings of PDF documents
When you receive a restricted PDF document, you may need to enter a password to open
it. If a document is encrypted, you may not be able to open it without permission from the
person who created the document. In addition, restricted or certified documents may
prevent you from printing your files or copying information to another application. If
you're having trouble opening a PDF document, or if you're restricted from using certain
features, contact the author of the PDF document.
To view the security settings of a document open in Adobe Reader:
Choose File > Document Properties, and then click the Security tab.
When a document is restricted or has a special status, icons appear in the lower left
corner of the document window. Double-click a status icon to view more information.
To view the security settings of a document open in a web browser:
Choose Document Properties from the pop-up menu
right side of the document. Then click Security.
above the vertical scroll bar on the