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Author: twsouthwick

docs/introduction-to-markup-compatibility.md

@@ -35,7 +35,7 @@ Open XML defines formats for word-processing, spreadsheet and presentation docum
 
 ## Markup compatibility in the Open XML file formats specification
 
-Markup compatibility is discussed in [ECMA-376, Second Edition, Part 3 - Markup Compatibility and Extensibility](https://www.ecma-international.org/wp-content/uploads/ECMA-376-Fifth-Edition-Part-3-Markup-Compatibility-and-Extensibility.zip), which is recommended reading to understand markup compatibility. The specification defines XML attributes to express compatibility rules, and XML elements to specify alternate content. For example, the **Ignorable** attribute specifies namespaces that can be ignored when they are not understood by the consuming application. Alternate-Content elements specify markup alternatives that can be chosen by an application at run time. For example, Word 2013 can choose only the markup alternative that it recognizes. The complete list of compatibility-rule attributes and alternate-content elements and their details can be found in the specification.
+Markup compatibility is discussed in [ECMA-376, Second Edition, Part 3 - Markup Compatibility and Extensibility](https://www.ecma-international.org/wp-content/uploads/ECMA-376-3_5th_edition_december_2015.zip), which is recommended reading to understand markup compatibility. The specification defines XML attributes to express compatibility rules, and XML elements to specify alternate content. For example, the **Ignorable** attribute specifies namespaces that can be ignored when they are not understood by the consuming application. Alternate-Content elements specify markup alternatives that can be chosen by an application at run time. For example, Word 2013 can choose only the markup alternative that it recognizes. The complete list of compatibility-rule attributes and alternate-content elements and their details can be found in the specification.
 
 ## Open XML SDK support for markup compatibility