Browse Definitions:
Definition

OPML (Outline Processor Markup Language)

Outline Processor Markup Language (OPML) is an XML file format used for creating outlines. As a result of the extensibility of the XML base, OPML has been used to organize many kinds of data as it may be customized for each application. The format is simple, self-documenting, extensible and human-readable. OPML allows a user to classify where content should be placed within a hierarchy as it is being created. This feature makes the format extremely useful for the creation of "living documents," where relationships and content are continuously updated.

OPML was created as a file format for an outliner application. An outline, in the context of information technology, is a hierarchy that explains how textual elements relate to each other; an outliner application is a text editor that gives the user control of the visible level of detail of a textual outline, allowing browsing and reorganization of the content according to its structure. Some OPML files may include data concerning size, position and expansion state of the window in which an outline is displayed.

OPML has recently become popular as a format for exchanging subscription lists between RSS feed readers and RSS aggregators. A user can use OPML to track both their own RSS feeds and see who is subscribing, where they are subscribing from and what other feeds other subscribers have chosen.

The standard XML-based OPML editor is open source , which has helped to drive both its growth and adoption. Credit for creating the OMPL protocol itself and driving much of its subsequent growth goes to Dave Winer, the software pioneer instrumental to the creation of XML, RSS 2.0 and many API s (application programming interface) related to Web publishing.

Much like HTML , OPML was designed to be quickly understood and applied with a minimum of technical knowledge. Because the standard is based upon XML, the technology is application and platform-independent and can be adapted for use within academic, scientific or business contexts.

This was last updated in March 2011

Start the conversation

Send me notifications when other members comment.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • cyborg anthropologist

    A cyborg anthropologist is an individual who studies the interaction between humans and technology, observing how technology can ...

  • RegTech

    RegTech, or regulatory technology, is a term used to describe technology that is used to help streamline the process of ...

  • conduct risk

    Conduct risk is the prospect of financial loss to an organization that is caused by the actions of an organization's ...

SearchSecurity

  • security

    Security, in information technology (IT), is the defense of digital information and IT assets against internal and external, ...

  • insider threat

    An insider threat is a malicious hacker (also called a cracker or a black hat) who is an employee or officer of a business, ...

  • virus (computer virus)

    A computer virus is malicious code that replicates by copying itself to another program, computer boot sector or document.

SearchHealthIT

  • HIPAA Privacy Rule

    The Standards for Privacy of Individually Identifiable Health Information, commonly known as the HIPAA Privacy Rule, establishes ...

  • HIPAA business associate agreement (BAA)

    Under the U.S. Health Insurance Portability and Accountability Act of 1996, a HIPAA business associate agreement (BAA) is a ...

  • telemedicine

    Telemedicine is the remote delivery of healthcare services, such as health assessments or consultations, over the ...

SearchDisasterRecovery

  • data recovery

    Data recovery restores data that has been lost, accidentally deleted, corrupted or made inaccessible. Learn how data recovery ...

  • disaster recovery plan (DRP)

    A company's disaster recovery policy is enhanced with a documented DR plan that formulates strategies, and outlines preparation ...

  • fault-tolerant

    Systems with integrated fault tolerance are designed to withstand multiple hardware failures to ensure continuous availability.

SearchStorage

  • Secure Digital card (SD card)

    SD cards use flash memory to provide nonvolatile storage. They are more rugged than traditional storage media and are used in ...

  • data storage

    In a computer, storage is the place where data is held in an electromagnetic or optical form for access by a computer processor.

  • flash storage

    Flash-based storage, based on flash memory, is used for data repositories, storage systems and consumer devices, such as USB ...

SearchSolidStateStorage

  • flash file system

    Flash file systems are designed specifically for memory devices. A well-designed flash device and flash file system ensure ...

  • IOPS (input/output operations per second)

    IOPS measures the maximum number of reads and writes to non-contiguous storage. It is not an actual benchmark since vendor ...

  • eMMC (embedded MultiMediaCard)

    An embedded MultiMediaCard (eMMC) is a small storage device made up of NAND flash memory and a simple storage controller.

SearchCloudStorage

  • RESTful API

    A RESTful application program interface breaks down a transaction to create a series of small modules, each of which addresses an...

  • cloud storage infrastructure

    Cloud storage infrastructure is the hardware and software framework that supports the computing requirements of a private or ...

  • Zadara VPSA and ZIOS

    Zadara Storage provides block, file or object storage with varying levels of compute and capacity through its ZIOS and VPSA ...

Close