Polyline Annotations

Polyline annotations are built from ordered placement points. Each point becomes a vertex, and the annotation draws straight segments through those vertices.

Annotation	Polyline behavior
PolyLineAnnotation	The default PolyLineAnnotation📘, drawing editable line segments through the points array.
XABCD pattern	A five-point labelled pattern using placementPointCount: 5 when created through the placement modifier.
Elliott patterns	A set of labelled Elliott-pattern examples using 6 ordered polyline points.

These examples use the same PolyLineAnnotation📘 class. Patterns such as XABCD, Elliott patterns and other multi-leg shapes are configured by changing the points, labels, styling and placementPointCount; no extra annotation subclass is required.

See Also

• PolyLineAnnotation
• XABCD pattern
• Elliott patterns
• SVG drag points
• Keyboard shortcuts
• Adorner properties
• Multi-Point Labels Deep Dive
• Placement and Editing