This system is pH (acidity).
Created 2003/02/23 and copyright ©2003 by DavidRobins. All Rights Reserved.
You might want to read this document instead - it uses the next incarnation of pH and describes the evolution of pH.
Features:
Very loosely based on PHPWiki? (a WikiWikiWeb), as in, I started using PHPWiki? and mostly hated it because:
Site design and content copyright ©2003 David B. Robins. All Rights Reserved. pH?