you wrote:
> To which objects is the SetData action applied, since it shall not be
> applied to any object of the subclasses of the Program class, and since the
> Program class is an abstract class ?
SetData can be used for other ingredients, such as Text, or Bitmap.
> What is the funcion of this action ?
That is easy: You can change during runtime of the ingredient the
content data. For example, you have a Text displaying an useful
information, such as the title of the currently running video. If the
next movie starts, you can change the displayed text without creating a
new text object. That is convenient for the author, and it saves
bandwidth.
> Thank you very much,
welcome :-)
- Klaus
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