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Besides differences in the schema, there are several other differences between the earlier Office XML schema formats and Office Open XML. Whereas the data in Office Open XML documents is stored in multiple parts and compressed in a ZIP file conforming to the Open Packaging Conventions, Microsoft Office XML formats are stored as plain single monolithic XML files (making them quite large ...
Office Open XML uses the Dublin Core Metadata Element Set and DCMI Metadata Terms to store document properties. Dublin Core is a standard for cross-domain information resource description and is defined in ISO 15836:2003. An example document properties file (docProps/core.xml) that uses Dublin Core metadata, is:
Office Open XML (also informally known as OOXML) [5] is a zipped, XML-based file format developed by Microsoft for representing spreadsheets, charts, presentations and word processing documents. Ecma International standardized the initial version as ECMA-376.
.pptx – PowerPoint presentation.pptm – PowerPoint macro-enabled presentation.potx – PowerPoint template.potm – PowerPoint macro-enabled template.ppam – PowerPoint add-in.ppsx – PowerPoint slideshow.ppsm – PowerPoint macro-enabled slideshow.sldx – PowerPoint slide.sldm – PowerPoint macro-enabled slide.ppam – PowerPoint add-in
The big change in PowerPoint 2007 and PowerPoint 2008 for Mac (PowerPoint version 12.0) was that the stable binary file format of 97–2003 was replaced as the default by a new zipped XML-based Office Open XML format (.pptx files). [270]
Microsoft Open XML Format SDK [78] contains a set of managed code libraries to create and manipulate Office Open XML files programmatically. Version 1.0 was released on June 10, 2008 [ 79 ] and incorporates the changes made to the Office Open XML specification made during the current ISO/IEC standardization process. [ 80 ]
Microsoft backs an open-source effort to support OpenDocument in Office 2007, as well as earlier versions (up to Office 2000), through a converter add-in for Word, Excel and PowerPoint, and also a command-line utility. [51] As of 2008, the project supports conversion between ODF and Office Open XML file formats for all three applications. [52]
ISO/IEC IS 29500-1:2012—Office Open XML File Formats [1] ISO/IEC IS 26300-1:2015—Open Document Format for Office Applications (OpenDocument) v1.2 [2] Language type Markup language Markup language XML schema representation XML Schema (W3C) (XSD) and RELAX NG (ISO/IEC 19757-2) RELAX NG (ISO/IEC 19757-2) Expression of extensibility rules