What does a dashed arrow mean in a flow chart?

An arrow is used in a flowchart because it links one part to another. For example, a flow chart describing the process of electric energy:

[Power plant] ---> [Transformer] ---> [Power lines] ---> [Transformer] ---> [House] ---> [Transformer] ---> [Device]

As you can see, the arrows show the direction of where the flow chart is leading, telling the viewer where to begin, and where the to.