The program closes . Notice that the taskbar button for the program (here WordPad) has disappeared.
INTRODUCTION
When you finish working in a program, close it to free system memory. Too many open programs can tax your system's memory and slow the computer's processes, such as saving, printing, switching between programs, and so on.
TIP
More Ways to Close
You can also press Alt+F4 or click the Close button in the program's title bar to close a program.
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Saving Your Work
If you have not saved a file and close that file's program, a message box appears asking if you want to save the file. If you do, click Yes ; if not, click No . If you want to return to the document, click Cancel .