ISO 10303-214:2010(E)
A Draughting_callout is a combination of annotation elements that, as collection, represent a recognized annotation concept.
EXAMPLE Figure 25 shows typical Draughting_callout objects on a drawing.
NOTE Each Draughting_callout may be a combination of an Associated_draughting_callout and one of the other types of Draughting_callout.
A Draughting_callout is a type of Detailed_element.
Each Draughting_callout may be an Associated_draughting_callout.
Each Draughting_callout may be one of the following: a Surface_condition_callout, a Geometric_tolerance_callout, a Dimension, a Datum_target_callout, or a Datum_feature_callout.
The data associated with a Draughting_callout are the following:
The contents specifies the Annotation_element objects that form the Draughting_callout.
See draughting_callout to annotation_curve, draughting_callout to annotation_subfigure, draughting_callout to annotation_symbol, and draughting_callout to text for the application assertions.
There shall be at least one object that defines the contents for a Draughting_callout.
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