Draw line that connects the box graph of y direction.
| Call | DclDrawYBoxLine | (X, y, [type], [index]) |
| X | < R (:) > | The central x coordinates value (the user coordinates) of a box graph. |
| Y | < R (:) > | The y coordinates value (the user coordinates) of the edge of a box graph. |
| Type | < I > | A line type. |
| Index | < I > | Line index. |