Using background images for context establishment

[michaelsjackson]

Example: You have in your harddisk

• concept.org
• concept.png
  both in same directory. When selecting "concept", as background concept.png should be displayed, if available.

This would be then almost a nice presentation, if you design/prepare your background images nicely. Maybe all child concepts could use same parent concepts background image, if they do not have their own background. That could be very useful and cool, I guess.