The system is built to be easily extended by writing new code. There are some skills required for the easy part to hold true. You have to know HTML, PHP, and MySQL.

The recommended way to do this for location adaptations is to use the local subdirectory. Any modification done there will survive an upgrade of the system with no or minor modifications.

This section has hints and tips on how to do things as well as what functions and classes are available to use. Some are optional, some have to be used for the system to work properly.