View Info allows you to view, change, create and delete any (standard and custom) document information fields in a PDF using an easy-to-use user interface from Acrobat.
To create and modify document information fields, you need to buy one fully-functional copy of View Info to use with Acrobat. With a fully-functional version you can view and modify document information fields for a PDF document from Acrobat's File> Document Info> View Info menu item.
Document information fields in PDF files can be indexed using Acrobat Catalog, enabling search on the metadata rather than just the full text. The standard fields of Title, Subject, Author, and Keywords, are always indexed.
The evaluation version of View Info may be used for free, with Adobe Acrobat, as long as you follow the conditions in the View Info licence agreement. You may also distribute the evaluation version of View Info for free as long as you follow the conditions in the View Info licence agreement. These conditions include either distributing our installer, or a customised Acrobat installer which installs the View Info plug-in and Online Guide in the correct places.
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.