Computer Graphics Metafile (CGM) is an ISO standard, defined by ISO/IEC8632:1999, for the interchange of 2D vector and mixed vector/raster graphics.WebCGM is a profile of CGM, which adds Web linking and is optimized for Webapplications in technical illustration, electronic documentation, geophysicaldata visualization, and similar fields. First published (1.0) in 1999, WebCGMunifies potentially diverse approaches to CGM utilization in Web documentapplications. It therefore represents a significant interoperability agreementamongst major users and implementers of the ISO CGM standard.
The design criteria for WebCGM aim to balance graphical expressive power onthe one hand, versus simplicity and implementability on the other. A small butpowerful set of standardized metadata elements supports the functionalities ofhyperlinking and document navigation, picture structuring and layering, andenabling search and query of WebCGM picture content.
The present version, WebCGM 2.1, refines and completes the features of themajor WebCGM 2.0 release. WebCGM 2.0 added a DOM (API) specification forprogrammatic access to WebCGM objects, a specification of an XML Companion File(XCF) architecture, and extended the graphical and intelligent content ofWebCGM 1.0.
This section describes the status of this document at the time of itspublication. Other documents may supersede this document. A list of current W3Cpublications and the latest revision of this technical report can be found intheW3C technical reports index athttp://www.w3.org/TR/.
This is theRecommendationof the WebCGM 2.1. This document is a product of theWebCGM Working Group as partof theGraphics Activity.
This specification was produced jointly byOASIS andW3C and published on 01 March 2010 by bothorganizations. It is published simultaneously as anOASIS Standard and a W3CRecommendation.The two documents have identical normative technical content, with only coverpage, editorial and formatting differences as appropriate to the twoorganizations.
Known implementations are documented in the publicWebCGM 2.1 implementation report. A test suite isalso available via theWebCGM2.1 Test Suite page.
This WebCGM 2.1 edition incorporates all known errata as of the publicationdate. The list of changes made since the Proposed Recommendation is availableinAppendixD1.
Please report errors in this document to the public email listpublic-webcgm@w3.org(publicarchive). Use "[REC Comment]" in the subject line of your email.
The original Recommendation document (dated 01 March 2010) was updated on 24august 2010. Wrong links in the following Table of Content and in the abovenon-normative formats (zip file andsingle HTML file) were corrected to relative links. Acopyof the original Recommendation cover page is archived.
WebCGM 2.1 is related to the previous W3C work on WebCGM 1.0 and 2.0.WebCGM 2.0 wassimultaneously published by W3C as a Recommendation and by OASIS as an OASISStandard. The two versions are identical in technical content, differing onlyin the formatting and presentation conventions of the two organizations.
This WebCGM 2.1 specification was initially based on a work by the samename,WebCGM2.1 an OASIS Committee Specification.
This document has been reviewed by W3C Members, by software developers, andby other W3C groups and interested parties, and is endorsed by the Director asa W3C Recommendation. It is a stable document and may be used as referencematerial or cited from another document. W3C's role in making theRecommendation is to draw attention to the specification and to promote itswidespread deployment. This enhances the functionality and interoperability ofthe Web.
This document was produced by a group operating under the5 February 2004 W3CPatent Policy. W3C maintains apublic list of any patentdisclosures made in connection with the deliverables of the group; thatpage also includes instructions for disclosing a patent. An individual who hasactual knowledge of a patent which the individual believes containsEssentialClaim(s) must disclose the information in accordance withsection6 of the W3C Patent Policy.
