When you are connected to a model, you can visualize the model in 3D viewer. First モデルに接続すると、3Dビューアでモデルを視覚化できます。First connect to the model by using the option "Open IFC file", then you can turn on and off the 3D panel using Show/Hide 3D viewer option in the list of panels on the right hand side of the window 
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