5 cents courtesy of Mr. Leach:

The term 'Comments' in this question is about as ambiguous as the word 'Database' when some monkey asks you to drop one. Or 'car' when the missus tells you she saw a really flash one.

Comments in my eyes are just commented out statements in the objects schema.

Extended properties = entirely different (if this is what it was aimed at).

Should we start a thread called 'WTF are comments??' 😀