The TrackBack feature was introduced in version 2. 2, and has since been adopted by a number of other blog systems.

The TrackBack has since been implemented in most other blogging tools.

As a result, TrackBack spam filters similar to those implemented against comment spam now exist in many weblog publishing systems.

Trackbacks are used primarily to facilitate communication between blogs ; if a blogger writes a new entry commenting on, or referring to, an entry found at another blog, and both blogging tools support the TrackBack protocol, then the commenting blogger can notify the other blog with a " TrackBack ping "; the receiving blog will typically display summaries of, and links to, all the commenting entries below the original entry.

Some blogging tools are able to discover these TrackBack URLs automatically, others require the commenting blogger to enter them manually.

Blogging software that supports the TrackBack protocol displays a " TrackBack URL " with every entry.

Some individuals or companies have abused the TrackBack feature to insert spam links on some blogs.

Revision 1. 2 was the last version of the APM specification, released in 1996.

In 1983, the American National Standards Institute formed a committee, X3J11, to establish a standard specification of C. After a long and arduous process, the standard was completed in 1989 and ratified as ANSI X3. 159-1989 " Programming Language C ." This version of the language is often referred to as " ANSI C ", or sometimes " C89 " ( to distinguish it from C99 ).

Before there was an official standard for C, many users and implementors relied on an informal specification contained in a book by Ritchie and Brian Kernighan ; that version is generally referred to as " K & R " C. In 1989 the American National Standards Institute published a standard for C ( generally called " ANSI C " or " C89 ").

The next year, the same specification was approved by the International Organization for Standardization as an international standard ( generally called " C90 ").

Common Lisp was developed to standardize the divergent variants of Lisp ( though mainly the MacLisp variants ) which predated it, thus it is not an implementation but rather a language specification.

The CD-R, originally named CD Write-Once ( WO ), specification was first published in 1988 by Philips and Sony in the ' Orange Book '.

The COBOL specification was created by a committee of researchers from private industry, universities, and government during the second half of 1959.

" The IBM COMTRAN language invented by Bob Bemer was also drawn upon, but the FACT language specification from Honeywell was not distributed to committee members until late in the process and had relatively little impact.

The network model's original inventor was Charles Bachman, and it was developed into a standard specification published in 1969 by the CODASYL Consortium.

Subsequent to the specification of the original 15 elements, an ongoing process to develop exemplary terms extending or refining the Dublin Core Metadata Element Set ( DCMES ) was begun.

" No independent standard was developed for DOM Level 0, but it was partly described in the specification of HTML4.

Digital Cinema Initiatives ( DCI ) was formed in March 2002 as a joint project of many motion picture studios ( Disney, Fox, MGM, Paramount, Sony Pictures Entertainment, Universal, and Warner Bros. Studios ) to develop a system specification for digital cinema.

First published in the System V Application Binary Interface specification, and later in the Tool Interface Standard, it was quickly accepted among different vendors of Unix systems.

A draft specification for The IBM Mathematical Formula Translating System was completed by mid-1954.

Though used earlier in papers and discussions, the term 4GL was first used formally by James Martin in his 1982 book Applications Development Without Programmers to refer to non-procedural, high-level specification languages.

It was formally defined as such by the Internet Engineering Task Force ( IETF ) with the mid-1993 publication of the first proposal for an HTML specification: " Hypertext Markup Language ( HTML )" Internet-Draft by Berners-Lee and Dan Connolly, which included an SGML Document Type Definition to define the grammar.

This version was the precursor to the multimedia features available in Windows 3. 1 and later, and was part of Microsoft's specification for the Multimedia PC.

This experimental revision was called IMAP2bis ; its specification was never published in non-draft form.

In 1981, the Internet addressing specification was revised with the introduction of classful network architecture.

" As a joke, the IP over Avian Carriers formal protocol specification was created and successfully tested.

After the HTML and HTML + drafts expired in early 1994, the IETF created an HTML Working Group, which in 1995 completed " HTML 2. 0 ", the first HTML specification intended to be treated as a standard against which future implementations should be based.

( e. g. LIDAR mapping ) but in fact it is not mapping because a map is created through some cartographic works ( i. e. determining the scale / level of detail and content of geographic or cartographic database, entry criteria and symbol specification for geospatial objects, generalization, layout design etc .).

Data Distribution Service for real-time systems ( DDS ) is a specification of a publish / subscribe middleware for distributed systems created in response to the need to augment CORBA with a data-centric publish-subscribe specification.

WP4 created a Drafting Group Message Handling ( DGMH ), which was responsible for the specification of SMS.

Until recently, as of 2005 the x86 architecture did not meet the Popek and Goldberg requirements-a specification for virtualization created in 1974 by Gerald J. Popek and Robert P. Goldberg.

The complete Servlet specification was created by Sun Microsystems, with version 1. 0 finalized in June 1997.

** IDL specification language, the original IDL created by Lamb, Wulf and Nestor at Queen's University, Canada

In collaboration with Pamela Zave, he created " Distributed Feature Composition ", a virtual architecture for specification and implementation of telecommunication services.

The BitTorrent specification is free to use and many clients are open source, so BitTorrent clients have been created for all common operating systems using a variety of programming languages.

The original specification was created by AMD, and has been implemented by AMD, Intel, VIA, and others.

Because these connections may encounter loads and fatigue during product lifetime, there is a chance that they may fail if not created to proper specification.

In a bid to recapture the market for low-cost, high-performance cars, Holden created a new SV8 specification level.

The VBX specification was created so that developers could extend Visual Basic.

TenDRA uses the Architecture Neutral Distribution Format ( ANDF ), a specification created by the Open Group, as its intermediate language.

It was originally created at Nokia Research Center, and it includes a DOM and XPath 1. 0 implementation as well as an XForms engine that implements the XForms 1. 1 specification almost completely.

However, the specification has been created with C # in mind.

The ACR specification was created by the Advanced Communications Riser Special Interest Group ( ACR SIG ) in 2000 with the intent to replace the AMR specification.

All future versions of the HDMI specification will be made by the HDMI Forum that was created on October 25, 2011.

Out of frustration with the long and seemingly useless chain of approvals required of component specifications during which no actual checking seemed to occur, an engineer at Signetics once created a specification for a write-only memory and included it with a bunch of other specifications to be approved.

The Platform for Internet Content Selection ( PICS ) is a specification created by W3C that uses metadata to label webpages to help parents and teachers control what children and students can access on the Internet.