Siebel Developer's Reference > User Properties > Applet User Properties >

Specifying the Method That the Enter Key Calls

The Default Applet Method user property specifies the method that Siebel CRM runs if the user presses the Enter key in an applet. The value for this user property must include the name of a method that Siebel CRM accesses from the applet.

You can configure Siebel CRM to modify the value for this user property, create a new instance of it, or deactivate it. Only one instance can exist on each applet.