Computers don't usually have a safety button, look at your instruction manual or on the manufacturers website for more details
where is the navigation button on my computer
the Ctrl button.
sizing button
the power button
Start button/Windows button/Windows Key and then click where it says (My)Computer
No such button.
By pressing the C button then the L button then the E button and last but not least the F button on your computer ( make sure you do it in a word document).
safety measures when using a computer
If there isn't a button, you can go to My Computer, right click the device, and in the menu, there should be an option to eject safely. If you remove it before you "safely remove" when you insert a pen drive you will the safety remove icon in your PC.
Pressing the control, alt and delete button at the same time shuts down the computer. It is often used when a computer freezes. It is not a safe way to shut down a computer, but upon rebooting, a scan may be ran to insure safety.
close button
Which one? The one to the main SPY computer is the big red button on the control panel of the computer.