Using PIF files
A program information file (PIF) is created when you create a shortcut to, or modify the properties of, an MS-DOS-based program. PIFs allow you to set default properties for MS-DOS programs, such as font size, screen colors, and memory allocation.
When you change any settings in an MS-DOS-based program, a PIF is automatically created. The settings you specify will be used each time you start the program by double-clicking its icon. If you start the program from a command prompt window, these settings won't be used.
Creating a program information file (PIF) for an MS-DOS-based program creates a shortcut to the program executable. All the settings saved in the PIF file are contained in the shortcut. Windows displays PIF files as shortcuts.