Tonight, the version 5.5 Beta 9 brings translations of the new features in German, Swedish, Russian, Traditional and Simplified Chinese, and a few more improvements about horizontal rotations.
I also updated some demos to ensure they use the new features of the version 5.5, particularly for sloping roofs and doors on thick walls. Finally, I decided that the child piece with the biggest model size will be used as a sort criterion for rows containing a furniture group.