Shows, closes, activates, resizes, moves a specified window.
Return window's handle into Specifies a variable for receiving the handle of the window, the window handle can be used in sequent actions for another purpose.
Center window Specifies whether to move the window to the center of the current display.
Wait for X second after executing this action Specifies whether to wait for a moment after executing the specified window action. Some window actions would cause a refresh of the content in the window, and it may causes subsequent steps work wrong. You can specify a short time period to wait for the refresh complete. In a general case, two seconds is enough
The handle of the window is a number that uniquely identifies a window in windows.