You are running the file:
/home/waltera/public_html/assignment3/predefined.php

You are viewing this page using:
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

Predefined variables are varibales that can be accessed in PHP that provide information about the server or the client and seen above. These variables help with analytics.