UI Object Designer Documentation

Hello,

it seems i"m not the only one to looking for documentation around manipulating UI Object in the Diagrams.
Basicly, Is there a place where we can find the Objects/Class architecture but for UI components of the Diagram ?

i'm able to retrieve tables informations, but no way to find "Tables Formats" documentation.
looking in the Online Doc and in the MetaModel Help (in PowerDesigner) unsuccesfully.
Very tahnks & Take CAre