When a balloon is attached to an edge, what does it include?

When a balloon is attached to an edge in SolidWorks, it typically includes an arrow. Balloons are used in drawings to reference components in a bill of materials or to indicate items in an assembly. The arrow signifies the component to which the balloon is pointing, making it clear which part is being referenced or identified.

In a typical usage scenario, the balloon will not only provide a visual connection with the component but may also include additional information, such as a part number or quantity. However, the essential feature that distinguishes a balloon and makes it functional in the context of technical drawings is the presence of the arrow, as it directs attention to the relevant part in the assembly.