In this tutorial we slowly construct an oversimplified version of the maptagside plugin. A significant general point is that these tutorials don't represent the maptagside plugin as it actually is, but rather what I currently think it should have been. It uses some Java-style coding conventions, such as initial caps for classes and lowercase for functions & variables.

The actual maptagside plugin is a sprawling mess, since it was my first, & embodies many errors in design. Perhaps I will clean it up some day, but otoh, if it ain't broke, don't fix it.