Defines the supported annotation types.
3D annotation.
Circle annotation.
Cloud polygon annotation.
Clould square annotation.
File attachment annotation.
Free text annotation.
Ink annotation.
Line annotation.
Link annotation.
Polygon annotation.
Polyline annotation.
Popup annotation.
Redaction annotation.
Rich media annotation.
Rubber stamp annotation.
Screen annotation.
Sound annotation.
Square annotation.
Text annotation.
Text markup annotation (highlight, underline, strikeout or squiggly).
Unknown annotation.
Field widget annotation.