OML

OML
OML can also be the abbreviation for Open Modeling Language, Old Main Line, Oregon Medical Laboratories, One More Level or Old Mutual.

OML (Outline Markup Language) is an XML format for outlines. It was originally proposed by Ray Grieselhuber. The specification is designed to build upon the concepts found in OPML, with the goal of fixing some of its limitations.

OML has a structure similar to OPML. Its advocates claim that although it is as simple and as flexible as OPML, its extension mechanism is better than that of OPML. Instead of letting users add attributes freely, OML introduces an <item> element (child element of <outline>); instances of the <item> element may be added freely.

The resulting documents are claimed to be easier to parse than equivalent OPML documents. Readers of OPML never know what attributes others may have added to standard elements; so an element the reader wants to parse may contain a mixture of known and unknown attributes. This claimed disadvantage of OPML actually applies to any XML-based format, including OML, because XML namespaces may add attributes to existing tags; however, OPML is unusual in its enthusiasm for free-form definition of new attributes. In OML, extensions are added in the form of <item>s instead; an unknown <item> may be discarded without harming known data elsewhere in the file. The approach taken by OML is designed to be more in keeping with the approach of other XML-based languages and with the philosophy of some standards organizations.

Despite its claimed advantages, OML has not seen wide use. Reasons for the greater popularity of OPML may include the relative newness of OML (finalized in May 2003), and non-technical political issues between members of the XML community.

Critics of OML point out OML doesn't have a mechanism to preserve whitespace. Some have also found the distinction between <item> and <data> unnecessary.

See also


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • OML — (ordinary maternity leave) 26 weeks statutory leave available to an employee who gives birth, regardless of the length of time she has been working for the employer. The employee may qualify for statutory maternity pay (SMP), depending on her… …   Law dictionary

  • OML — Die Abkürzung OML kann stehen für: Object Module Library OPEN Modeling Language eine Modellierungssprache, die lange Zeit als Hauptkonkurrent von UML galt; Teil von OPEN Outline Markup Language ein XML Format Orbital Motion Limit eine Theorie zur …   Deutsch Wikipedia

  • OML — Oklahoma Municipal League (Governmental » State & Local) * Ontology Markup Language (Computing » Software) * Object Manipulation Language (Computing » General) * Operations Management License (Computing » Software) * Open Meeting Law (Community » …   Abbreviations dictionary

  • OML — orbitomental line …   Medical dictionary

  • OML — • Ordnance Missile Laboratories ( > IEEE Standard Dictionary ) • Omkalai, Papua New Guinea internationale Flughafen Kennung …   Acronyms

  • oml — ISO 639 3 Code of Language ISO 639 2/B Code : ISO 639 2/T Code : ISO 639 1 Code : Scope : Individual Language Type : Living Language Name : Ombo …   Names of Languages ISO 639-3

  • OML — [1] Ordnance Missile Laboratories ( > IEEE Standard Dictionary ) [2] Omkalai, Papua New Guinea internationale Fughafen Kennung …   Acronyms von A bis Z

  • OML — Outer Mold Line Contributor: MSFC …   NASA Acronyms

  • OML — Oh My Lord …   Glossary of chat acronyms & text shorthand

  • OML — Optimo Maximo Lucius …   Abbreviations in Latin Inscriptions

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”