And what do you name your second comment?

{"notes to self":["Don't edit config files by hand","use a decent hierarchy"]}

//Http://jsoneditoronline.org

You could even write comments as a linear RSS feed of nested OPML outlines, by converting all that XML to JSON.

http://convertjson.com/xml-to-json.htm

Yep, I went through the process of replacing all our XML objects into json ones about 6 years ago now. Smaller files and much easier to read, manipulate store and transfer.

And while I personally quite liked XSLT, javascript is a much more flexible and reliable option.