A 4 file extension is related to the ROFF the Unix program that allows users to formatting texts.

There are 3 other file types using
the 4 file extension!

empty icon.4 - IBM Embedded ViaVoice voice type languages scripts data file format

empty icon.4 - Salt Lake Winter Olympics game music data

empty icon.4 - GNU Screen log file

Detailed description

Software that open 4 file

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4 file extension - Unformatted manual page (Roff/nroff/troff/groff)

What is 4 file? How to open 4 files?

File type specification:

Document file type icon Document file type

The 4 file extension is associated with the ROFF the Unix program that allows users to formatting texts.

The .4 file stores unformatted manual page. It is also compatible with NROFF, TROFF or GROFF.

Updated: August 31, 2018

The default software associated to open 4 file:

Unix icon

The Open Group logoUnix  Linux/Unix software

Company or developer:
The Open Group

A multi-tasking operating system for various platforms, the first version of UNIX was released in 1969. It is developed by AT&T as well as various commercial vendors, universities and non-profit organizations. Traditional Original Unix systems have characteristics of Version 7 Unix or UNIX System V. Unix Specification have Mac OS X, Mac OS X Server, Solaris, AIX, HP/UX, z/OS etc. Other systems, such as Linux and BSD are called Unix-like or Unix system-like.

Help how to open:

Use compatible tools to work with *.4 files.

How to convert:

Probably can be exported to other formats.

List of recommended software applications associated to the .4 file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open 4 file, edit 4 file, convert 4 file, view 4 file, play 4 file etc. (if exist software for corresponding action in File-Extensions.org's database).

Unspecified and all other actions for computer programs working with 4 file - Unformatted manual page (Roff/nroff/troff/groff)

Click on the software link for more information about Unix. Unix uses 4 file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).

Linux/Unix:

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