How to document the structure of XML files

When it comes to documenting the structure of XML files...

One of my co-workers does it in a Word table.

Another pastes the elements into a Word document with comments like this:

<learningobject id="{Learning Object Id (same value as the loid tag)}" 
            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
                xsi:noNamespaceSchemaLocation="http://www.aicpcu.org/schemas/cms_lo.xsd">




<objectRoot>
    <v>
        <!-- Current version of the object from the repository. !-->
        <!-- (Occurance: 1) -->
    </v>
    <label>
        <!-- Name of the object from the repository. !-->
        <!-- (Occurance: 0 or 1 or Many) -->
    </label>
</objectRoot>

Which one of these methods is preferred? Is there a better way?

Are there other options that do not require third party Schema Documenter tools to update?