The debug action opens a VA Smalltalk debugger window enabling the developer to trace through the application execution to determine the cause of the error.

The display action displays a message box for the error that occurred.

For example, to display a message box, connect this to the errorOccurred event.

The printOn: action sends the textual error message as defined by the communication protocol. This action require one parameter representing the output stream where the error is to be printed.