Application Main Form or MainForm is the first displayed form when a web session starts. In general MainForm is first form of your application which is used to navigate to other forms using menus or other navigation tools. MainForm is automatically created when a new project is created. Each web session has its own private copy of MainForm and closing a MainForm will terminate the session.
A blank MainForm
MainForm is registered in initialization section of unit so uniGUI can distinguish it from other forms.