How to use mapper in bot interface?

[David_Z]

I'm talking about this one, still have no idea what is it doing.
Any example?

 

[VladZen]

Do you know about plugins in zennoposter? Some kind of project in project.
Plugin is integrated with main project via BotUI.
Mapper is an element to load lists/tables from main project into BotUI and work with them inside plugin.