my visual metaphor uses 2,421 colors and can be printed on a sheet
measuring 6 by 9 meters.
It is implemented in Processing and made to run on multiple monitors,
detailing the transformation process as the journey of a Unas in his
crossing to the Akhet horizon
http://www.pyramidtextsonline.com/Antesouth.htm

A diagram is presented at the top of page of a simple xsl:choose
statement with one when, one otherwise implementing an atomic instance
of the transformation logic.

Cheers,
Bryan Rasmussen

I always get in my head that game Connect4 or those old coin sorters
that would shunt a coin this way or that.

In XSLT case, we put the data in at the top of the game, and it
naturally finds itself somewhere at the bottom...I could go on with
the analogy

otherwise I think in terms of pipes and plumbing, water as data....

cheers, Jim Fuller