ERP 2.50:Developers Guide/Fundamentals and Concepts/it
The Openbravo Fundamentals and Concepts sections give a very detailed description of basically all relevant Openbravo development concepts.
Common fundaments discusses modularity, security, multi-client/organization and multi-currency and many more topics. All topics are discussed from the development point of view.
The application dictionary is an important section as it forms the basis for the model driven development approach followed by Openbravo. The application dictionary defines and describes many application components which are translated to code through the templating and generation engines.