A collection of interesting articles I've gathered from different sources...
Yugen (subtlety):
yugenThe Zen view, simply put, is that you want to evoke the power of suggestion; leave something to the imagination of your viewer. When you stare at a proud Bonsai, often you will experience feelings of mystery, spirituality, historical reflection or you will simply just appreciate its regal standing. The subtle appearance of its tiny branches and their twists and turns will subtly tell stories of its past. Zen meditation concerns the discarding of unnecessary baggage and focusing on empty space in which to grow.

Limit information just enough to pique curiosity and leave something to the imagination