Component, or loadable, families in Revit need to start with a good structure. Let’s consider the Reference Planes as the Bones and the Parameters as the Ligaments of a Revit family. Delving into the properties of a Reference Plane and how they can help control a family will open your eyes to their strength. Parameters be they Shared or Family parameters form the ligaments for these bones. The power of that Shared parameter file and rules of editing it will enlighten you as to its use.
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