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File extension Details of PWL, PPD, PRF, PREFPANE, PK2, PID, P7B, POL, SCF

Name:PWL
File Type:Windows Password List
Popularity:3
Category:system
File Description:List of passwords used for the main Windows login, dial-up and network passwords, and other programs such as NetMeeting; stored in an encrypted format in the Windows directory; used to automatically authenticate the user for login screens after the "Remember Password" option has been checked.
Open Programs: Windows Not meant to be opened
Can be viewed with LastBit PWLView or PWL Tools
Name:PPD
File Type:PostScript Printer Description File
Popularity:3
Category:system
File Description:File that serves as a driver for a PostScript printer; describes the font, paper sizes, DPI resolution, memory configuration, and other features and capabilities supported by the printer.

PPD files may also contain PostScript code that can be referenced during a print job; this code includes commands that invoke specific PostScript printing features.
Open Programs: Mac OS Referenced by the printer
Viewable with a text editor Windows Referenced by the printer
Viewable with a text editor
Name:PRF
File Type:Windows System File
Popularity:4
Category:system
File Description:Contains settings and preferences used by the Windows operating system; may also be used by other applications to store program settings.
Open Programs: Windows Referenced by Windows and should not be opened directly
Name:PREFPANE
File Type:Mac OS X System Preference Pane
Popularity:3
Category:system
File Description:Adds a system preference to the Mac OS X System Preferences window; Apple preferences are stored in System->Library->PreferencePanes, while third-party preferences are stored in the Library->PreferencePanes directory
Open Programs: Mac OS Used by the Mac OS X operating system
Name:PK2
File Type:Silkroad Online Game Data File
Popularity:3
Category:system
File Description:Contains game data used by Silkroad, a massively-multiplayer online role-playing game (MMORPG) developed by Joymax, a South Korean company; may contain game graphics, sounds, music, etc; saved in a compressed and encrypted format.

Examples of PK2 files include Media.pk2, Music.pk2, Map.pk2, and Particles.pk2; Silkroad P2K files are not meant to be opened manually, but can possibly be edited with the XVI32 hex editor.
Open Programs: Windows Joymax Silkroad Online
Name:PID
File Type:Creative Driver File   (Most common)
Popularity:3
Category:system
File Description:Hardware driver file such as "PdtIdMgr.pid," installed by Creative software; typically installed in the "Program Files\Creative\Shared Files\" directory along with other driver files; enables communication with Creative hardware devices, such as sound cards or portable media players like the Creative Zen.
Open Programs: Windows Used by Creative hardware devices
Name:P7B
File Type:PKCS #7 Certificate File
Popularity:3
Category:system
File Description:Security file that stores secure certificates used to authenticate a person or device, such as a computer or Web server; similar to a Base-64 (.CER) certificate, but uses different formatting; can be installed using the Certificate Import Wizard by right-clicking the file and selecting "Install Certificate."
Open Programs: Windows Microsoft Certificate Manager or Certificate Import Wizard
Name:POL
File Type:Windows Policy File
Popularity:3
Category:system
File Description:Defines a specific user or user group's settings; contains registry information for all computers, users, and groups that will use the policy file
Open Programs: Windows System Policy Editor
Name:SCF
File Type:Windows Explorer Command   (Most common)
Popularity:4
Category:system
File Description:Command used by Windows Explorer; for example, to move up or down a directory or show the Desktop; run via Internet Explorer.
Open Programs: Windows SCF Editor
Microsoft Windows Explorer
Name:STR
File Type:Windows Screensaver File
Popularity:1
Category:system
File Description:Screensaver used by Windows computers; contains animations, pictures, text, or moving patterns that fill the screen when the computer has been idle for a specific amount of time; can be selected within the Displays control panel.

Most screensavers have a .SCR extension.
Open Programs: Windows Used by the Windows operating system

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