Clicking and dragging the mouse in the box chart will generate a vertical floating hairline. By "floating", we mean the hairline will follow the mouse cursor as it is dragged in the box chart. During this activity, a Data Legend at the viewport's base will appear, and continuously report the parameters of the stock data currently in the hairline's focus.

Clicking one of the segments in the Data Legend allows you to edit that particular data field for the given stock entry. The Data Legend remains visible on the screen until you strike your keyboard's ESCape key.