Welcome to the most underwhelming experience in all the land! Here, we will attempt to explain the intricacies of subtlety, but not too much.
Subtlety, n. A state of being slightly less subtle than a whisper in a library, but not so much that it's actually noticeable.
We have a few subpages that you might find mildly amusing:
Subtlety: A Journey of a Thousand Steps
The Art of Saying Nothing at All
Or, if you're feeling really brave, try: