| Member | Description |
|---|---|
| CIRCLE | A circle filled with annotation's interior color, if any. |
| CLOSED_ARROW | Two short lines meeting in an acute angle as in the OpenArrow style,connected by a third line to form a triangular closed arrowhead filled with annotation's interior color, if any. |
| NONE | No line ending. |
| OPEN_ARROW | Two short lines meeting in an acute angle, forming a open arrow head. |