If you want to stay interfering eyes out of your main documents then Office has an aspect that permits you to password protected your documents from being opened, being changed or both?

You just want to do is go to File, then Save As and then click on Tools menu. You get General Options selection.

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In Save Options dialog box you will have choices to allocate a password to open or change document. There is also a choice to create document read only so no one can save over your original document.

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