PDF-tools.com recently announced the official release of version 2.37 of its Classic Tools -- such as the PDF Library, the PDF Prep Tool, the Command Line Tools, the Stamp Tool, the Form Filling & Flattening Tool, and the PDF Image Import Library.
Numerous improvements and new features have been built into the new version. All of the changes associated with the new release are documented in the Release Notes.
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.