Bitmap graphic created by MacPaint for the Macintosh, one of the first painting programs for the Mac; supports only black-and-white graphics since the original Macintosh had a monochrome monitor.
Program(s) that open mac files
Mac: Apple MacPaint; Apple QuickTime Player Windows: Corel Paint Shop Pro
Information from FileInfo.com - The File Extensions Resource.
http://www.fileinfo.com/extension/mac
