prf (polychrome recursive format) is a image file format. It is an extension of mrf (monochrome recursive format), created by Russell Marks, author of zgv. mrf, as the name suggests, applies only to monochrome images. It is an elegant and effective format, reducing image files to sizes not much larger than png, but using much less code. prf is my personal attempt to apply the same idea behind mrf to grayscale/color images. It is not nearly as effective at reducing file sizes, and the code is a little bit less simple. But it may yet have its uses. If nothing else, it's a good compromise for a programming task that needs images stored more compactly than pnm but can't afford a full-scale png implementation.
Files with the PRF extension identify setting files used to create a user profile in the Microsoft Outlook utility. PRF files store user data and preferences such as mail settings, folders and signatures. PRF files can be opened and edited using the Outlook application.
File extension used by dBase for printer driver .
Improces - Fastgraph bitmap graphics (pixel run format).
Stores preferences for ClarisWorks, such as toolbar positioning and Welcome screen options.Stores settings for Macromedia Director. Macromedia was acquired by Adobe. Most settings for Microsoft Outlook 2003 and Microsoft Office Outlook 2003 can be efficiently configured, updated, and deployed to users by using standard deployment tools — typically by using the Custom Installation Wizard before installation, and the Custom Maintenance Wizard after installation. Settings can also be captured by using the Office Profile Wizard, which results in an OPS file that can be deployed to users. However, to modify existing settings or to configure settings that are outside the norm — such as those not included in the wizards — you can create and edit an Outlook profile file (PRF file), and then deploy that to your users by using the installation or maintenance wizards, or by deploying the PRF file by itself. A whitepaper is available that describes how to configure new settings by using a PRF file, and how to distribute these new settings to users. The following link opens the document in Microsoft Word: Outlook Deployment Options: Customizing a PRF File.
File extension used by Profan. Form that contains plot requests for eQuorum's Plot Station, a program for managing plotting jobs; saved in an ASCII text format and includes instructions and parameters for generating the plotted output; may be created by Plot Station Client and is processed by Plot Station Server.
File extension used by Monarch.
Web profile created in the Platform for Internet Content Selection (PICS) format; contains filtering rules that allow or block access to certain URLs; used for implementing Internet safety policies, such as parental or teacher controls, which limit access to certain websites for students and children; also used for sharing PICS profiles with others. The PICS format was proposed in the mid 1990s, and was adopted by some Web technologies. However, it is not widely used today and has been superseded by the Protocol for Web Description Resources (POWDER). NOTE: PRF files were supported by some Web browsers and Web servers, such as Internet Explorer and Microsoft IIS.
File extension used by Atheros software for WiFi cards.