# Getting Started

## Arrange masks (Main menu Window)

| This main menu entry is only available in MDI mode!
| When several forms and/or lists are open at the same time, they can be rearranged as cascading masks or tiled masks. You can arrange the windows by selecting the respective command from the Window menu. In the same menu, you are also able to rearrange the icons on your desktop.
| In the bottom part of the menu, all open forms/lists are listed. The currently active mask is highlighted. To close all open lists/forms, click the menu item Close all .