

,b>For users with Adobe Reader 9 or earlier: If the PDF file has been granted extended permissions via Adobe Acrobat, then not only will the two default commenting tools be available, but the complete set of markup and measurement tools will also appear, via the Comment and Tools panes in Reader X.

If the PDF file is secured to prevent changes and commenting, then no commenting tools in Reader X will work, and the two default tools will be disabled on the Comments Pane. To apply comments to any other PDF file being displayed within a web browser, you must save a copy to your computer and open it with the standalone (desktop) version of Reader X. If the PDF is being views within a web browser using the Adobe Reader X plugin, commenting is not available unless the PDF is part of a browser-based review workflow. If an *unsecured* PDF file is opened in the standalone version of Adobe Reader X, then you have access to the Highlight and Sticky Note tools only.
