When you're creating spreadsheet documents to track employee IDs, forecast sales or compare products, you may want to prepare your data in another program and open the resulting file in Microsoft ...

You might want to open two files in two separate windows to compare them. Also, if you want to edit two files simultaneously, you need to open them separately. That is why you can change Notepad ...

When you open files that have a particular file extension, Windows will look at its configuration to determine what the default program should be in order to work with these files. The default program ...