Classic Administrative Template files (also known as ADM files) do not use an XML format. Earlier versions of the Group Policy Management tool (previously titled Group Policy Object Editor) displayed these settings under the Administrative Templates node.
The current version of Administrative Template files (known as ADMX files) use XML. The Group Policy Management Console displays these settings under the Administrative Templates node. However, the Group Policy Management Console still recognizes ADM files and displays these settings under the Classic Administrative Templates node, which is a child node of Administrative Templates.
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