You can use symbols as part of the view style for your orthographic drawings. The symbols can appear as part of the drawing view, replacing graphic objects to simplify drawing output. You can also place symbols on a drawing as a label in paper space.
Using Tools > Define View Style, you define symbols through the properties on the view style. When defined as part of a graphic rule in the view style, the symbol takes the place of an object included in the drawing view. Depending on how you created the symbol, the symbol can scale to match the drawing view contents. For more information, see Graphic Rule - Symbol Dialog Box.
If you are using a label to place a symbol in the paper space of the drawing, the symbol will not scale. For more information, see Labels.
You create symbols in SmartSketch Drawing Editor. For more information, see Create a Custom Symbol for Drawings.