# Events Logic

Default Program |

For Perform and Call operations, if a Default Program has been specified (on the Display tab of the Panel Header), then the program name may be omitted from the Perform or Call logic. In a case where a program name has been specified but does not exist on the system, NOMADS will attempt to run the Default Program at the label specified. It is not required that all code be in the specified program. A different "program;label" can be performed/called instead.

A label is mandatory to use the *IT - Integrated Toolkit or the Ed+ program editor, but not for other applications. See Program Editor.

If you include a program name (absolute or relative path) in any Events Logic (e.g. in Post Display, "program;label"), that will override the panel's Default Program.