When you double-click a file on your Mac, the operating system will automatically open the file using the program assigned to that type of file. It is possible, though, to open the file using another ...

We've posted the first installment in a three-part tutorial covering invisible files under Mac OS X. Written by Ted Landau, the first segment is entitled "What makes a file invisible in OS X?" An ...

A file extension, or file name extension, is the letters immediately shown after the last period in a file name. For example, the file extension.txt has an extension of .txt. This extension allows the ...

Learn how to use a Microsoft 365 setting that lets you determine whether to work in an online or desktop environment for each file. By default, Microsoft 365 saves files in the environment where you ...