Stamp a document
Use the Stamp tool to apply a stamp to a document in much the same way you would use a rubber stamp on a paper document.
1.		Display the Commenting toolbar.
2.		From the Stamp menu , select the stamp.
3.		Click the document page where you want to place the stamp.
4.		To move a stamp, select the Hand tool , and then drag it to a new location. Drag a corner handle to resize it.
You can create custom stamps from PDF, AI, PSD, JPEG, GIF, and bitmap formats.
Review and Comment Topics
Adding stamps in complete Help
Creating custom stamps in complete Help