It isn't easy to describe Tiki and its features and components and how they interrelate. Diagrams and other visual representations can help. When the "info" pages of tiki.org were revamped, a "software components" diagram was included on Software Overview and Model. This diagram was based on one done earlier but never published anywhere.
This page is for this and other similar diagrams that can help show Tiki's software components and how they work together to produce a solution that is quite different from other available options.
.xml version in PluginDiagram
More diagrams welcome