Broken links in a Web page or Notes application can frustrate end users, increase support calls and costs, and reflect poorly on the owner of the application. There are several third-party utilities available for validating links; however, none recognizes Notes design elements (such as views and hotspots). This article takes you through the workings of a utility (available for download from THE VIEW Web site) that reports on all broken links and their page locations in a Notes or Domino application. By gaining insight into the technologies the utility uses — a Java agent, Domino XML (DXL), and Simple API for XML (SAX) — you will see how you can easily extend this utility to validate other element types, such as JavaScript files or image resources, or change the actions it performs on the data it finds.