## StructuredDocumentTa.buildingBlockCategor property Specifies category of building block for this **SDT** node. Can not be ``null``. ```js get buildingBlockCategor(): string ``` ### Remarks Acces......doc = new aw.Document(); let buildingBlockSdt = new aw.Markup....StructuredDocumentTa(doc, aw.Markup.SdtType.BuildingBlockGallery, aw.Markup.MarkupLevel...