Here’s a simple trick you can use in OS X 10.5’s Open dialog box. Say you’ve decided to open a saved file in a given application. You press Command-O (or select File -> Open if you’re menu-inclined) ...
You may content yourself with double-clicking on files to open them, but depending on what you’re doing, there may be a quicker or more convenient option. Here are 19 different ways to get the job ...