Creating a message (IDL code)
1. In the Packages pane, locate the Package or Model that is to own the Message.
2. Right-click the Package or Model, point to > , and the clickMessage.
3. From the Type Selector dialog, select the appropriate Template Module, and then click OK.
The Message represents a structure that is used to instantiate the Template Module.
4. Type the name of the Message, and then press the Enter key.