# Annotation Reference

Logical grouping of other annotations

Entity type is `kA3DTypeMkpAnnotationReference`.

An annotation reference stores explicit combinations of markup data with modifiers that can then be used to define other annotations (feature control frame).

Returns

> `A3D_SUCCESS`on success, or an error code on failure

Structures

- `A3DMkpAnnotationReferenceData`

Functions

- `A3DMkpAnnotationReferenceGet()`
- `A3DMkpAnnotationReferenceCreate()`

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