Pushbutton action functions are attached to pushbuttons on data forms. The action function is called when the user selects or "pushes" the button. If your form contains a pushbutton, you will need to write and install a pushbutton action function.
Pushbutton action functions are useful for allowing the user to push a button to exit or quit from the form, pull up sub-forms or sub-menus, and many other tasks.
Writing and Installing Pushbutton Action Functions
