File Extension M4

.M4 File

File extension: M4
File type: Macro

Notes about the M4 file extension:

To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened" (Windows 7) or "How do you want to open this file?" (Windows 10) if you double-click the file. There click on "More apps" and choose a suitable software to view such files on your PC or from email attachments.

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.

Detailed information for file extension m4:

Primary association: m4
Identifying characters Hex: 64 6E 6C , ASCII: dnl
Related links: Wikipedia m4 Entry

Other applications associated with file type M4:

  • Meta4 (Source Code) by Meta4Meta4: provider of human & intellectual capital management software.
File Identifier - TrID
'Identifying characters' used on are
provided by Marco Pontello from his TrID database

To change file associations press Windows Key + X and then Apps and Features > Default apps > Choose default apps by file type. Invalid file associations could be the result of underlying issues within your Windows PC.

Technical data

To view technical data on file-extension M4 click this link to expand/hide the additional area.

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.

ProgramID: ZAMailSafe
EXEFile: %ProgramFiles%\Zone Labs\ZoneAlarm\zlclient.exe -warning %1

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