As you work with and refine your screen, a number of useful editing functions are available to help you as you work. Most of these functions, like Undo/Redo or Cut/Copy/Paste, can be invoked with keyboard shortcuts. You can also use the Edit menu or the Screen Designer right-click pop-up menu to access most editing commands.
Remember that most keyboard shortcuts can be customized through the Tools > Options interface, as discussed in Configuring Keyboard Shortcuts.
Keep in mind that you can use the Tab key to navigate through the controls in your screen. Press Tab to move through the controls on the screen from lowest tab order number to highest. Press Shift+Tab to move backward through the controls. Screen control tab order is discussed in more detail in Determining Control Tab Order.