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The File Extension Library

What is a file extension?

Short answer: it's the set of letters after the period (.) in the name of a file.

Long answer: File extensions signify the file format of a file. It tells the operating system (OS) how data was stored in the file. Not all OS, require a file extension though. For instance, this is optional in Unix, but is mandatory with MS-DOS and Windows systems.

In most file formats the file type is actually defined by the contents (first bytes, file structure), but extensions are used to define the application that is used for opening the file.

Below is a detailed database of thousands of file extensions our team has compiled for you. Feel free to browse!


Browse all Extensions:
ABCDEFGHIJKLMNOPQRSTUVWXYZ
HAL - Extension Details
Date Added: August 02, 2009
File Extension:  .HAL
Description 1: .HAL file extension is linked with Mortyr Game Archive. This is the archive format utilized by Mortyr a computer game which is set in 1944 with Germans winning battles during this time of war. The game features tactical skills of troops and German military techniques that helped them conquered Europe and America. .HAL file extension and Mortyr are owned and developed by Interplay Productions.
Description 2: .HAL file extension is linked with Hyper Access Lite OS/2 Data File. This is the file extension for the data file utilized by OS/2 an operating system which was initially developed by IBM and Microsoft, then later by IBM exclusively. OS/2 stands for "Operating System/2 since it was introduced as part of IBMs "Personal System/2, which is a secondgeneration PC. IBM is no longer marketing OS/2 but currently, it is being sold under the name eComStation by Serenity Systems.
File Type:   Data File
Mode: ASCII
Program(s) to Open:  previously used by IBM secondgeneration computers; currently used by Serenity Systems eComStation
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