To configure the way the Constraints Window appears on the screen, click the right mouse button anywhere inside the window, then make a selection from the pop-up window.
Allow Docking - allows you to click and drag the window and park it anywhere on the screen.
Hide - hides the window. To make the window reappear, click Window on the menu bar 
click Constraints Window.
Clear Window - removes information from the window.
Float in Main Window - causes the window to fill the main window.
