PCauthorities.com presents…
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
HED - Extension Details
Date Added: January 01, 1970
File Extension:  .HED
Description 1: .HED file extension is linked with ReliaSoft RG File. This is the file extension for the RG file utilized by ReliaSoft RGA a program that combines the most reliable and powerful RG [reliability growth] analysis with repairable system analysis capabilities that help determine the optimum overhaul time and other results minus the usual prerequisite detailed data.
File Type:   Data File
Mode: ASCII
Program(s) to Open:  Windows: ReliaSoft RGA
Common:
Extension: