Note: The boundary of the path reinforcement is on by default. Turn it off by clicking View tabGraphics panel (Visibility/Graphics) and clearing the Boundary Visibility parameter under Structural Path Reinforcement.
Revit places a Path Reinforcement symbol and a Path Reinforcement tag on the completed sketch at the center of the longest segment of the path.
Note: When you place path reinforcement, the rebar elements are not visible. If you want to display them you can specify the visibility of rebar elements in the Graphics section of the Path Reinforcement Properties palette. The visibility setting is available only when hosting rebar in path reinforcement.