This article is about the computer file format ".mno". For the definition of MNO in mobile networking, see Mobile network operator

Mobile network operator

A mobile network operator , also known as mobile phone operator , carrier service provider , wireless service provider, wireless carrier, or cellular company, or mobile network carrier is a telephone company that provides services for mobile phone subscribers.One essential...

.

mno is a file extension created by some web design

Web design

Web design is the process of planning and creating a website. Text, images, digital media and interactive elements are used by web designers to produce the page seen on the web browser...

ing software like UltraDev or Dreamweaver. It often goes after the existing extension of the webpage (.html, .asp, .php), in effect creating a double extension, for instance, filename.html.mno.

When a page with a recordset

Recordset

A recordset is a data structure that consists of a group of database records, and can either come from a base table or as the result of a query to the table....

 is created by some web design software, an .mno file is created in the site's _notes folder. .mno file contains design notes. This folder is usually not visible in the site manager

Site Manager

In the construction industry, site managers, often referred to as construction managers, site agents or building managers, are responsible for the day-to-day on site running of a construction project. Site managers are required to keep within the timescale and budget of a project, and manage any...

, but it can be viewed using your system's file management tool. The MNO file contains XML

XML

Extensible Markup Language is a set of rules for encoding documents in machine-readable form. It is defined in the XML 1.0 Specification produced by the W3C, and several other related specifications, all gratis open standards....

 information that are used to gain information about recordsets on the page. The XML file defines the name and data type of the recordset columns. Web Design

Web design

Web design is the process of planning and creating a website. Text, images, digital media and interactive elements are used by web designers to produce the page seen on the web browser...

ing softwares need this file to properly populate the data bindings panel in their design environment.

Potential issue with missing MNO file

When a file from one development machine is moved or copied to another, the data bindings panel may not show recordsets. Even though the server behaviors tab displays that a recordset has been defined, it may not be available under the data bindings tab in the design environment. This happens when the associated MNO file is missing in the new development machine. The solution to this issue is to copy the missing MNO file to the "_notes" folder in the relevant directory in new machine.