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Faces with a fixity constraint appear in gray.
When converting a shape in FreeShape, all of the faces are fixed. You must therefore delete the fixity constraint on the faces to be "freed" for the purpose of geometric or dimensional changes to the part.   
To delete the fixity relationship, select the fixed element and then choose the Remove fixity command from the popup menu displayed when right-clicking.
In order to simplify the entities tree display, the fixity constraints symbols are not displayed into the constraints list of the FreeShape. |