.MML File Extension

File Type 1

FrameMaker Maker Markup Language File

Developer Adobe Systems
Popularity
3.8  |  17 Votes
Category Page Layout Files
Format Text

What is an MML file?

File created using the Adobe Maker Markup Language (MML); used by Adobe FrameMaker, a program used to produce and publish large structured documents; contains formatting instructions for page layout, graphics, text, and other page properties.

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MML files may be imported into an existing FrameMaker document, or they may be used to generate a new page layout. They are stored in an ASCII text format.

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Programs that open MML files

Windows
Mac
Updated February 15, 2010
File Type 2

Mathematical Markup Language File

Developer W3C
Popularity
3.5  |  2 Votes
Category Web Files
Format XML

What is an MML file?

An MML file is an XML document that includes one or more mathematical formulas written using the Mathematical Markup Language (MathML). MML files are used to integrate mathematical formulas into .HTML webpages. You can recognize MML files by the <math xmlns="http://www.w3.org/1998/Math/MathML"> element.

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Screenshot of a .mml file in Microsoft Visual Studio Code
MML file open in Microsoft Visual Studio Code

In 1998, the Worldwide Web Consortium (W3C) released the first version of MathML. This markup language helps developers describe mathematical formulas and integrate those formulas into webpages.

Most commonly, developers use MathML to write formulas directly within HTML and .XHTML documents. However, developers can also save MathML formulas in MML files and reference those files in HTML and XHTML documents. For example, if a developer plans to include the same MathML formula in multiple webpages, they can save the formula as a single MML referenced by multiple webpages.

Just like typical .XML documents, MML documents contain data structured using a series of tags. However, the tags MML documents contain primarily describe the components of a mathematical formula. For example, the <mo> tag is used to denote a mathematical operator, such as + or -, and the <mn> tag is used to denote a number.

How to open an MML file

You can open an MML file in Microsoft Visual Studio Code, GitHub Atom, or any other text or source code editor. Source code editors include helpful tools, such as syntax highlighting, that make viewing and editing MML files easier.

You can also open an MML file and edit the formula it contains in OpenOffice Math, LibreOffice Math, and Wolfram Research Mathematica.

Programs that open MML files

Updated February 7, 2022
File Type 3

MyMailList & AddressBook File

Developer Avanquest Software
Popularity
2.7  |  3 Votes
Category Data Files
Format Binary

What is an MML file?

Data file created by MyMailList & AddressBook, a program used for organizing personal contact information; saves a spreadsheet table of contacts and can be printed to structured digital or hard copy forms in the software.

Programs that open MML files

Updated May 17, 2012
File Type 4

Microsoft Clip Organizer File

Developer Microsoft
Popularity
2.3  |  3 Votes
Category Data Files
Format Binary

What is an MML file?

Data file used by Microsoft Clip Organizer, a program used for managing clip art images used in Microsoft Office applications; saves media catalog information used by the software.

Programs that open or reference MML files

Windows
Updated December 28, 2011

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