Learn how to create and use custom keywords in Katalon Studio in this 13-minute tutorial from Automation Step by Step. Discover the difference between built-in keywords (pre-added and covering most scenarios) and custom keywords (user-defined and scriptable). Follow a step-by-step process to create custom keywords: create a new keyword file, name it, script your functions with the @Keyword annotation, and implement it in test cases. The tutorial demonstrates practical examples including simple functions and how to categorize keywords using keywordObject. Master this powerful feature to extend Katalon Studio's capabilities with your own reusable automation components.