Shell profile used by Linux and Mac OS X terminal programs; contains definitions for a shell environment, such as environment variables, scripts to execute, and other instructions; used for storing pre-defined settings that are loaded when a shell program starts.

When opening Apple Terminal in Mac OS X, the program automatically searches for a PROFILE file and executes it line by line as a shell script. To manually run a PROFILE file, use the command source ~/.profile. PROFILE files are hidden files that do not have a filename prefix. They are always named .profile and are located in the user's home directory. NOTE: Apple Terminal is a Bash shell program.

Configuration file used by Citrix XenApp, a software package used for delivering virtualized software to client systems; stores the data needed for launching a streamed application to the user.

PROFILE files can be edited using the Citrix Streaming Profiler program included with XenApp software.

A PRO file contains Interactive Data Language (IDL), a programming language used for data analysis in scientific fields. It stores functions and procedures in plain text. PRO files are typically created using the IDL development environment application.

You can create a PRO file in IDL by selecting File → Save As.... You can also select File → Generate .pro to generate a PRO file from GUIBuilder interface definitions. This option is only available in Windows. You can open the file in IDL or another text editor since the programming language is stored in plain text. IDL is primarily used in scientific areas, such as medical imaging, atmospheric physics, and astronomy. It is used to visualize complex numerical data in order to help scientists and engineers more easily interpret data. NOTE: IDL is developed by David Stern and ITT Visual Information Solutions.

Project file created by KiCad, a free electronic design automation (EDA) program used for creating PCB designs and other electronics schematics; can be opened within the Windows, Linux, or Mac version of the software.

KiCad project files store a few common parameters for all schematics (.SCH files) and PCB layouts (.BRD files) in the project.

Player profile saved by one of the Pandemic Studios third-person shooter games; contains player information, such as the profile name, player preferences, and progress in campaign missions; saved to the \GameData\SaveGames\ directory of a game installation.

PROFILE files apply to Pandemic Studios games such as Star Wars: Battlefront 2, Mercenaries 2, and The Sabateur.

Project created by Punch! Software Professional Home Design applications; contains a layout design of a home; includes foundation, floor, electrical, plumbing, roofing, deck, and landscape objects and properties that are customized by the user.

To create a PRO file, select File → Save or Save As..., name your file, and click OK. To open a PRO file, select File → Open, navigate to your file, and click OK.

Presentation created with ProPresenter, a lyric presentation program; contains video and lyrics that can be pre-sequenced to worship songs and other music; often used by churches and ministries to create visual lyric displays during worship.

Project file created using the Qt software development toolkit (SDK), which allows developers to create cross-platform applications; contains all the information necessary to compile a Qt application with the Qt qmake command.

PRO files include references to project libraries, assets, and source code files, as well as other files such as application resources (.QRC files), project includes (.PRI files), translation sources (.TS files), phrase books (.QPH files), and style sheets (.QSS files). Qt projects are used for creating applications that run on the Qt framework. They are commonly used for creating mobile applications. NOTE: Qt SDK was previously developed by Nokia before Digia acquired the software.

Design file created by TurboFloorPlan 3D Home & Landscape, a professional application that enables users to design home and landscape layouts; contains a layout of a home property, which includes foundation, floor, electrical, plumbing, roof, HVAC, deck, landscape, and framing details.

The PRO file format is the primary file extension of the TurboFloorPlan 3D Home & Landscape Pro software. It allows you to save and resume your work. The application allows you to import .DXF and .DWG files and Punch! 3D objects into the PRO design. You can also export the PRO file to a DXF or DWG file.

A PRO file defines a TurboIntegrator process. TurboIntegrator is a tool used to create automated scripts to perform various data management tasks within the IBM TM1 system. PRO files are often found in the data directory of a TM1 server.

PRO files are one of the definition files used within the IBM Cognos TM1 enterprise planning system, now part of IBM Planning Analytics as of November 2016. TurboIntegrator processes may be created and edited within the Planning Analytics Workspace.