What would the following script generally be used for?

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The IsValid function:

Labels are used in conjunction with:

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

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:

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

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

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