What is the ancestor object for custom visual user objects such as u_calculator and u_calendar?

The windows that are opened in the client area of an MDI frame are known as:

The five system tables created by PowerBuilder the first time it connects to the database are collectively known as:

A control that can be used for displaying other controls is:

A named set of parameters stored in your PowerBuilder initialization file that defines a connection to a particular database in the PowerBuilder development environment is known as:

Which is the ancestor main window for all SDI applications?