Openbravo ERP 2.50MP12 is about to be released, one of the new cool features it includes is the capability of defining new Application Dictionary Base References within modules.
Application Dictionary References is the way Openbravo ERP defines data type of columns and how is rendered the UI for them. Before 2.50MP12, modules were not allowed to add base references, they only could use the ones provided by core and create new sub-references for these ones. This means that the UI and behavior for all fields in generated windows was set by the references in core, being impossible to define new ones in modules implementing different UI and behavior. The only way to perform all of this was creating manual windows where you are free to implement whatever you need, but as counterpart you loose the maintainability of having windows defined in Application Dictionary.
This limitation has now been broken. You can create base references in your module, which will allow to integrate within generated windows elements having new UI and behaving in a different way than the ones predefined in core.
As a first example of how this new capability can improve Openbravo ERP usability you can take a look at the new UI Selector, which through a module (available as commercial) implements a completely new UI for selectors. Being also the first module that integrates SmartClient within generated windows.