Ever download a folder full of files, only to notice all of the documents inside are zipped shut and encrypted—basically the digital version of Fort Knox? These are examples of the ever-wonderful, yet ...

Need to send someone a big batch of files? Don’t attach one after another after another to your e-mail. Instead, compress the files into one smaller, easier-to-manage file. In other words, “Zip” them.

When people talk about file compression, they usually mean ZIP. In fact, they often make it into a verb–much like we “Google” things on the Internet, we “zip” files before sending them over email. But ...