| webMethods Term | Definition |
| X12 | A standard for Electronic Data Interchange (EDI). ANSI, ASC, DISA
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| XML Adapter | An Enterprise Server adapter that can receive and send XML documents, translating as needed between XML and broker documents.
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| XML | Acronym for eXtensible Markup Language. A text format originally designed for large-scale electronic publishing. http://www.w3.org/XML/
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| XQL | Acronym for XML Query Language. XQL can be used to query an XML document. Integration Server supports this and the webMethods Query Language (WQL) for processing XML documents.
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| XSLT | Acronym for XML Stylesheet Language (XSL) Transformations. A language for transforming XML documents into other XML documents.
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