.prf

File Type 1 Generic IconWindows System File
File Format Standard
Usage Referenced by an application; not meant to be opened manually
Rank ★ ★ ★  Common
Description

Contains settings and preferences used by the Windows operating system; may also be used by other applications to store program settings; should not be opened manually.

Open With
Windows

IconMicrosoft Windows

Updated 2007
File Type 2 Generic IconFileNet eForms Form Preferences File
File Format Proprietary (IBM)
Usage Referenced by an application; not meant to be opened manually
Rank ★ ☆ ☆  Uncommon
Description

Contains user preferences for a form created with FileNet eForms electronic form design software; saved in the user's "Template Preferences" folder for each form accessed.

Open With
Windows

IconIBM FileNet eForms

Updated 2007
File Type 3 Generic IconPlot Station Plot Request File
File Format Proprietary (eQuorum)
Usage Open manually
Rank ★ ☆ ☆  Uncommon
Description

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.

Open With
Windows

IconeQuorum Plot Station

Updated 2007
File Type 4 Generic IconClarisWorks Preference File
File Format Proprietary (Apple)
Usage Referenced by an application; not meant to be opened manually
Rank ★ ☆ ☆  Uncommon
Description

Stores preferences for ClarisWorks, such as toolbar positioning and Welcome screen options; should be named "CLWORKS.PRF" and placed in the CLARIS directory; can be deleted to restore the program's default preferences.

ClarisWorks is a Macintosh productivity suite developed by Apple that was later also made available for Windows computers. It was later replaced by AppleWorks.

Open With
Windows

IconApple ClarisWorks

macOS

IconApple ClarisWorks

Updated March 29, 2007
File Type 5 Generic IconDirector Preferences File
File Format Proprietary (Adobe Systems)
Usage Referenced by an application; not meant to be opened manually
Rank ★ ★ ☆  Average
Description

Stores program settings for Adobe Director (formerly Macromedia Director); may also contain settings for Director Xtras, such as Media Lab's PhotoCaster.

The main Director settings file is named "Director.prf."

Open With
Windows

IconMacromedia Director

macOS

IconMacromedia Director

Updated 2007
File Type 6 Generic IconOutlook Profile File
File Format Proprietary (Microsoft)
Usage Referenced by an application; not meant to be opened manually
Rank ★ ★ ★  Common
Description

User profile referenced by Microsoft Outlook that contains user information and preferences; includes mail account settings, signatures, references to mail folders, and other settings; when Outlook imports a PRF file, the user profile settings are immediately updated.

PRF files can also be created using Microsoft's Office Resource Kit. The files can then be deployed to multiple systems using the Custom Installation Wizard (CIW) or other maintenance wizard included with the Office Resource Kit.

Open With
Windows

IconMicrosoft Outlook

macOS

IconMicrosoft Outlook for Mac

Updated December 14, 2009
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