Because this configuration involves modifying PTC-provided files, it is important that you understand and follow the practices detailed in the Managing Customizations chapter of the Windchill Customization Guide (Руководство по настройке Windchill). Because PTC-provided files can subsequently be updated by PTC in a maintenance release, you should use a “safe area” for managing your files so that your configurations are not lost when maintenance updates are installed. The Managing Customizations chapter provides information on setting up and using a “safe area” for storing your site-modified files, as well as keeping versions of the original PTC-provided files, and providing other best practice information. You should familiarize yourself with this information before proceeding with this configuration.