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The KRendering class is the base class of all renderings. More complex renderings can be build-up of multiple simple drawings using the KContainerRendering class which is the base class of all renderings with children. The KChildArea class can be used to place a KNode at a specific position inside a rendering. Once you have created a figure, KRendering offers the possibility to store it in a KRenderingLibrary. A stored rendering can be reused by referencing it with a KRenderingRef.

The following figure shows basic container renderings.

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Children of KContainerRenderings are placed inside, depending on the KPlacement of the container. Currently KRendering offers KStackPlacement for placing renderings in one column and KGridPlacement for placing renderings on a grid. A children can refine its placement by using KPlacementData.