.SGML File Extension

Standard Generalized Markup Language File

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What is an SGML file?

Document written in Standard Generalized Markup Language (SGML); includes tags that describe the information's structure and content; may contain multiple types of information, such as text, graphics, database information, and even audio and video data.

More Information

SGML files are similar to .XML files in that they reference Document Type Definition (.DTD) files, which describe the tags used within the document.

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Programs that open SGML files


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