A line with arrow heads at the ends.
Text-based marker with a callout outline with a tip that can point to specific place on the underlying image or annotation.
A combination of a frame (rectangle) and a text caption that goes with it.
Check mark image marker.
Filled rectangle marker.
Curve marker.
Custom image marker.
Unfilled ellipse marker.
Filled ellipse marker.
Unfilled rectangle marker.
Freehand drawing marker.
Semi-transparent freeform marker.
Semi-transparent rectangular marker.
Image marker base class.
Base class for line-like markers.
Line marker.
Base class for all markers.
A line with two vertical bars at the ends.
Polygon marker.
Base class for all markers that conceptually fit into a rectangle.
Base class for filled shape markers.
Base class for shape outline (unfilled shape) markers.
Text marker.
X (crossed) image marker.