I'm going through the spec, and I see some things, that I don't remember meaning of. I'll be sending questions as they come up. Here is the first one. http://www.total-knowledge.com/wiki/index.php/UU#Optional_Features_2 What is "Annotation"? Do we still intend to have "Expert" role? What will it do? -- Ilya A. Volynets-Evenbakh Total Knowledge. CTO http://www.total-knowledge.com