Office Open XML file formats: Difference between revisions

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DrawingML is unrelated to the other [[vector graphics]] formats such as [[Scalable Vector Graphics|SVG]]. These can be converted to DrawingML to include natively in an Office Open XML document. This is a different approach to that of the [[OpenDocument]] format, which uses a subset of SVG, and includes vector graphics as separate files.

A DrawingML graphic's dimensions are specified in ''English Metric Units'' (EMUs). It is so called because it allows an exact common representation of dimensions originally in either [[English units|English]] or [[Metric system|metric]] units—defined as 1/360,000 of a [[centimeter]], and thus there are 914,400 EMUs per [[inch]], and 12,700 EMUs per [[point (typography)|point]], to prevent round-off in calculations. [[Rick Jelliffe]] favors EMUs as a rational solution to a particular set of design criteria.<ref>{{cite web |title=Why EMUs? |last1=Jelliffe |first1=Rick |url=http://www.oreillynet.com/xml/blog/2007/04/what_is_an_emu.html |website=O'Reilly XML Blog |publisher=O'Reilly |access-date=2009-05-19 |archive-url=https://web.archive.org/web/20141229020130/http://archive.oreilly.com/pub/post/what_is_an_emu.html |archive-date=2014-12-29 |url-status=dead}}</ref>

Some have criticised the use of DrawingML (and the transitional-use-only [[Vector Markup Language|VML]]) instead of [[World Wide Web Consortium|W3C]] recommendation [[Scalable Vector Graphics|SVG]].<ref>{{ cite web | url=http://reddevnews.com/features/article.aspx?editorialsid=2356 | title= The X Factor | publisher=reddevnews.com |date=October 2007 }}</ref> VML did not become a W3C recommendation.<ref>{{ cite web | url = http://www.w3.org/TR/NOTE-VML | title = VML&nbsp;— the Vector Markup Language | publisher = W3.org | date = 1998-05-13 | access-date = 2009-05-19 }}</ref>