虽然在样板中不会被提到，但是她们必须在样板被处理前，使用api函式载入或注册。
Since they are not mentioned in the templates, they must be registered or loaded explicitly via API functions before the template is processed.
免费的椅子样板，在你前3单之后。
注意不改变的轮廓线将变出不同的款式，轮廓线必须在开始旋转样板前确认。
Note that the outline that does not change will vary from style to style, and must be identified before starting to pivot the block.
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