How do I back up documents that are stored in iCloud to my own hard drive?

Question

The trouble is, however I search for an answer to this question, I get instructions on how to back up stuff TO iCloud.
I want to back up stuff that applications like Pages and Numbers are already storing IN iCloud.
See, I don't want to have to trust iCloud to safely store my documents.  Not unless there are copies somewhere that I can fall back on if (it's really only a matter of when) something goes fatally haywire in iCloud.
It's easy enough to do with a service like, say, Dropbox, which treats my "cloud-stored" files like they are in a folder on my hard-drive.  So when I run either a local (Time Machine/Capsule) or a cloud (Crashplan, in my case) backup, those files get backed up.  So I have at least three copies of those files - in Dropbox, on my Time Capsule, and on Crashplan's servers.
So how do I do that with docs that are stored in iCloud?  Apple wants me to store stuff in iCloud - if I have iCloud enabled and want to save a doc to another destination, there are multiple steps I want to go through.  And I'm fine with using iCloud if I'm creating documents that I want to be able to access from my iOS devices as well.
Yes, I can do that with Dropbox, but it's less seamless than doing it through iCloud.
But I want my own backups of those files, and near as I can tell, Apple makes that nearly impossible because iCloud does not show up anywhere as a folder that I can access or sort.
Or does it?  Am I missing something?
If so, let me know.... if not... is there a solution to this dilemma, or is it just one more aspect of iCloud that Apple has not clearly thought through?
Thanks,
--PS

Answer 1

Right.  You didn't read the post, you only read the title.
The title came from an earlier step in the process when I was posing a question to the systen.
The pertinent part of the question is "How to I back up documents that are stored in iCloud" 
That the destination for the backup is NOT my internal HDD should be clear from the rest of the post.
And frankly, even if that is where I want to back up to, that would at least give me two copies, at least giving me one duplicate of the stuff on iCloud.
So please stop wasting my time if you can't answer the actual question: How do I backup content that is stored in iCloud.  The destination of the backup is irrelevant.
--P