File Extension M4

File type: Macro

The M4 file type is primarily associated with 'm4'.

m4 is a macro processing language designed by Brian Kernighan and Dennis Ritchie.

The name m4 stands for macro, i.e., m plus 4 characters. A macro processor (or a preprocessor) is a text-replacement tool. Its chief use is to re-use text templates, typically in programming applications, but also in text editing, text processing applications.

Typically lower case on *nix systems.

When windows gives you an error message saying that it
"Cannot open M4 files", this means either:

A. You need to identify a program that can open the file
B. Or your registry may be damaged

In both cases it is strongly recommended that you
run a free scan for registry errors.

'Identifying characters' used on FILExt.com are
provided by Marco Pontello from his TrID database

System Info for File Extension .M4

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and information FILExt collected directly from user systems.

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Program Name and MIME Type Info for File Extension .M4

FILExt has been given permission to display a Program Name/MIME type database collected by Anthony R. Nemmer. Some of this data has already been included into the main FILExt database. Those entries which have not yet been incorporated are displayed below.