Filename Extensions

Ever wondered how Windows knows which program to open for a particular data file? If you double-click on a file in Windows Explorer (or, indeed, on the name of an email attachment or any other hyperlinked file), Windows will open the program that is normally used to open that file. That program will then open …
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Checking File Sizes and Space Available

How do you check how much space is available on your drive(s), and how do you check the size of the files themselves? The usual way of checking on file sizes and space is by using “Windows Explorer”. This is nothing to do with “Internet Explorer” (the Microsoft browser program used to view web pages). …
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