This reminds me that Apple's Plist[1] is similar too:

    <array>
        <dict>
            <key>CFBundleTypeName</key>
            <string>ShapeEditDocument</string>
            <key>LSHandlerRank</key>
            <string>Owner</string>
            <key>LSItemContentTypes</key>
            <array>
                <string>com.example.shape-doc</string>
            </array>
        </dict>
    </array>

( Taken from[2] )

Maybe it's common to design XML schema like this at that time?

[1] https://en.wikipedia.org/wiki/Property_list

[2] https://github.com/robovm/apple-ios-samples/blob/1f6b14ef6e2...