By default, the Advanced toolbar contains commands for advanced content operations.
If the toolbar is currently hidden, go to View > 
Toolbars and select it to show it.
Stamp: Contains available stamps. See the Stamp Tool section for more information.
Attachment (F): Embeds a file in the PDF.
Cut Content: Removes image or text data from the content stream of a PDF and at the same time moves that information into the clipboard so it can be pasted in Revu or another program.
Sign Document: Creates a signature field and automatically attempts to sign it.