Closing Hidden Files FileMaker Pro will open files as hidden if needed by a relationship. Often, what happens is that you get tons of files open. When you choose the hidden files from the window menu so you can close them, they often open another related file. This can be very frustrating. One way to get around the issue is to know that you can close hidden files by choosing Close from the File menu. In other words, files don't have to be visible to be closed. Just choose Close from the File menu or type the keyboard equivalent. Files will be closed in descending order.
Dull Boy FileMaker files were stored in clear text prior to FileMaker 7 so, if you opened a FileMaker file in a text editor, you could see the phrase "All work and no play makes Jack a dull boy" in the header repeated over and over. No, it's not a virus! My understanding is the developers just needed to take up some space in the header and that's what they came up with. Today, modern FileMaker files are stored in Unicode so I'm not sure if the phrase is still there.