A standard event occurs in templates and custom WebItems, and automatically appears in the Code window. These are predefined events, and only appear in the Code window’s Procedure listbox. There are three standard events associated with every WebItem: Respond, ProcessTag, and UserEvent. The Respond event is the default event of a WebItem when it is activated by a request. ProcessTag is used to replace the content of a tag with data specified in your code. Finally, the UserEvent is used to process the events of a WebClass that are created at runtime.