Mac OS 9 identifies files by two characteristics: Type and Creator. Type tells whether a file is an application, a document, an extension or whatever. If it is a document, Type will further identify ...

When you open an image, a different app than usual starts up. When you open a music file, "This isn't the app I wanted..." ...

Normally, if you change a file’s extension in Windows, it doesn’t do anything positive. It just makes the file open in the wrong programs that can’t decode what’s inside. However, [PortalRunner] has ...

Microsoft uses file associations to set default programs for opening different file types on all its operating systems. As a result, when you open a file, be it text, image, or document, on your ...