Recording and customizing scripts to create a test framework involves a lot of effort. A small change in the application user interface or use case can make the scripts unusable. IBM Rational Performance Tester includes several powerful yet not so widely known script editing features that you can use to modify all HTTP components of a page to adjust them to changes in the application. Priyanka Arora describes how testers can use these features to edit HTTP elements of a web page, including connection, request, response, headers, and content. She explains how you can extend these features to add new pages to existing test recordings. Then she offers a few methods that can help in determining when and what to add or modify in a script to bring it in line with changes in the application and the environment.