RealBasic code for using Expose in Mac application

I need a small piece of RealBasic code for use in a button or menu item. The application I am developing for Mac produces a lot of windows when in use. I want a piece of code that can be put in a control (button or menu item) that will use / operate Expose to show all the open windows for the application. That is, a RealBasic code fragment that does what typing "control F3" on the keyboard normally does. Maybe by sending "control F3" to the Finder or Mac OS? Not sure. ## Deliverables I am quite familiar with the fundamentals of Real Basic, just need some quick help.