You’re welcome… Here’s a short palette for documents. It’s very basic, but it should show how to use the palette. You’ll notice that several items have the same short cut — that’s because when KM sees a conflict it brings up another palette for just the conflicted entries. The effect is a cascading menu (alt-shift-d > m > d for MD Document, rather than MD Marked, for example).
As I said, it’s very basic, but it’s helpful.
You can get a lot more complicated than this — but with DT3 that often involves using calling AppleScript and they’re a lot more specific to individual workflows so they’re harder to share easily.
If you have a look at this thread: Bookends, DT3, and annotations, I’ve discussed an annotation workflow using KM and AppleScript, which is almost entirely based on scripts written by Korm and Frederiko (who know far more than I ever will about such things). It populates a new annotation document from an initial data entry screen. It probably won’t be directly copiable, but it may give you some ideas of what can be achieved — and if you search the forum you’ll find some more sophisticated examples.
HTH.