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As next, a background image shall be placed on the visualization page. To do so, select "Image" from the object catalog at the left hand side and drop the element on the empty page.
Then, choose the image of the Floor . Double-click the image and select the Floor image. Afterwards, change to the tab "Position/Layer" and enter "0" for "Top" and "Left" and select "Background" as layer (the "Background" layer is the last layer within the list). Now the image is moved to the top left corner and fixed to the background.
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