RenderObjects
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Introduces most of the RenderObject types provided by C1PrintDocument.

The sample creates and previews a C1PrintDocument, in which most of
the RenderObject types provided by C1PrintDocument are included:
RenderArea, RenderText, RenderGraphics, RenderEmpty, RenderImage,
RenderRichText, RenderPolygon, RenderTable, RenderParagraph.
