The document discusses the functions of keys on a keyboard and buttons on a mouse. It describes: - What various function keys (F1-F12) on a keyboard are used for in programs like Word, Excel and PowerPoint. - How control keys like Ctrl, Alt and Shift modify the function of other keys, such as Ctrl+C for copy, Ctrl+V for paste. - Navigation keys like arrow keys, page up/down, home and end. - Keys for editing text like backspace, delete, insert. - Mouse functions like right click to access menus/contextual options, left click to take actions, and scroll wheel functions.