Which MIME types are related to file extension ".mnu"?

The .mnu file extension is associated with 3 MIME types:

text/plain, application/octet-stream, application/x-autocad.

A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.

About .mnu Files

MNU files are menu configuration files used by different applications.
Based on information from FilExt.com, these files vary in format and purpose depending on the software.

UltraEdit Menu: Uses the MIME type text/plain. These files are stored as plain text. Users can edit them with text editors like Notepad or UltraEdit to customize command menus.
Telepaint Menu: Uses the MIME type application/octet-stream. This format indicates a binary stream. It requires Telepaint or compatible software to interpret the menu layout.
AutoCAD Template Menu File: Uses the MIME type application/x-autocad. This file type is used as a template for menu commands in AutoCAD, allowing users to tailor interface shortcuts and command sets.

Each version serves to enable software customization by defining how menus appear and function. The plain text version is easy to modify, while the binary and specialized AutoCAD versions require their specific applications to view or edit the file effectively.

Relationship between file extension and MIME type

A file extension is a suffix at the end of a filename that indicates what type of file it is. File extensions help both users and operating systems identify what application should be used to open the file.

File extensions are typically separated from the filename by a period (dot) and consist of 2-4 characters, though they can be longer. For example, in the filename "document.pdf", ".pdf" is the file extension.

File extensions are closely related to MIME types, as they both serve to identify the format of a file. However, while MIME types are used primarily by web browsers and servers, file extensions are used by operating systems and applications.

Associated MIME types

text/plain, application/octet-stream, application/x-autocad

FAQs

What is an MNU file?

An MNU file is a menu configuration file used by various software applications to define interface layouts, commands, and shortcuts. The most common uses are for AutoCAD (legacy menu templates), UltraEdit, and older graphics software like Telepaint. Because the format varies by program, an MNU file intended for one application usually cannot be used by another.

How do I open an MNU file?

The method depends on the file's origin. If it is an UltraEdit menu, you can open and edit it with any text editor like Notepad or Notepad++. For AutoCAD files, you must load them within the AutoCAD interface using the MENULOAD or CUILOAD commands. If the file contains binary data (like Telepaint menus), it requires the specific software that created it.

Can I edit an MNU file with a text editor?

Yes, if the file is text-based. AutoCAD (legacy) and UltraEdit MNU files are typically stored as plain text, allowing you to modify menu structures manually using code editors. However, if you see garbled characters when opening the file, it is likely a binary format (MIME type application/octet-stream) and cannot be edited with standard text tools.

How do I load an MNU file in modern versions of AutoCAD?

Modern versions of AutoCAD use CUI or CUIX files, but they still support legacy MNU files for backward compatibility. To load one, type CUILOAD in the command line, browse for your .mnu file, and select Load. AutoCAD will automatically convert the legacy menu data into a CUI file format for use in the current environment.

What are the correct MIME types for MNU files?

The MIME type depends on the file's content. Text-based menu configurations are often served as text/plain, while AutoCAD-specific templates may use application/x-autocad. Binary versions are generally classified as application/octet-stream. For a comprehensive list of types, you can consult mime-type.com.

How do I convert an MNU file to CUIX?

You cannot convert MNU directly to CUIX in a single step outside of AutoCAD. Instead, load the MNU file into AutoCAD, which converts it to a CUI file. You can then use the CUI Editor (command CUI) to transfer the menu data into a main CUIX file or save the converted CUI as a CUIX package.

General FAQ

What is a MIME type?

A MIME (Multipurpose Internet Mail Extensions) type is a standard that indicates the nature and format of a document, file, or assortment of bytes. MIME types are defined and standardized in IETF's RFC 6838.

MIME types are important because they help browsers and servers understand how to process a file. When a browser receives a file from a server, it uses the MIME type to determine how to display or handle the content, whether it's an image to display, a PDF to open in a viewer, or a video to play.

MIME types consist of a type and a subtype, separated by a slash (e.g., text/html, image/jpeg, application/pdf). Some MIME types also include optional parameters.

How do I find the MIME type for a file?

You can check the file extension or use a file identification tool such as file --mime-type on the command line. Many programming languages also provide libraries to detect MIME types.

Why can one extension have multiple MIME types?

Different programs and historical usage may assign various MIME identifiers to the same file format. Listing them together helps maintain compatibility across tools.