Minimise
Click this button once to minimise the currently open window. It becomes a button on the taskbar or, if it is a window within a program, a button in the left-hand bottom corner of your desktop. When you have minimised a program/window the Minimise button changes to become the Restore button.
To open a minimised program, select the button on the taskbar that represents the program. Select Restore.
To close a minimised program, select the button on the taskbar that represents the program. Select Close.