The AppleWorks 6.2 Updater replaces your AppleWorks 6.x application with an application package that contains both AppleWorks 6.2 for Mac OS X 10.0, and AppleWorks 6.1.2 for Mac OS 8.1 through Mac OS 9.x.
An application package is not a single executable file, but a package of files that includes one or more executable binaries. In this case, the package contains two binaries, one for Mac OS 9.1, and one for Mac OS X 10.0.
Mac OS 9.1 Installation
When you start up a computer with Mac OS 9.1, and double-click on the AppleWorks 6.app file, AppleWorks 6.1 for Mac OS 9.1 opens.
Mac OS X Installation
When you start up a computer with Mac OS X 10.0, and double-click on the AppleWorks 6 file, the AppleWorks 6.2 for Mac OS X 10.0 opens.
Note: The ".app" extension is not visible in Mac OS X 10.0. The filename will appear as "AppleWorks 6" when in Mac OS X 10.0, and as "AppleWorks 6.app" when in Mac OS 9.1.