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DM2003 is a standard MDI application, like other popular
desktop applications: it consists of main window (MDI frame)
and a variable number of child windows (document, or data
windows). Thus, while DMApplication
object represents main application window that has a collection
of document windows, DMDocument object provides access to the
document windows. Every document window, in turn, has three
child objects: invisible data container
and two visible viewers: worksheet and
plot, both are used to display container's data.
Note that all appropriate coclasses are hidden - you cannot
explicitly create instances of DMDocument, DMContainer, DMWorksheet
and so on, but you have access to these objects via properties
of another objects.