Note: If you already have Mathematica 4 installed, you do not need to install MathReader 4 to view Mathematica 4 notebook files. If you still want to install MathReader, you should note that all notebook files will be opened by MathReader 4 when you double-click them. Rerun the Mathematica 4 installer to have Mathematica 4 open notebook files by default. If you experience problems with fonts when printing or pasting into other applications, you should install the Mathematica 4 fonts into your machine's fonts folder. Drag the font suitcase found at Mathematica 4 Files:SystemFiles:Fonts:Macintosh:MathFonts into your Disk:SystemFolder:Fonts folder.