A callout tag is an annotation element that marks the location of a callout in a parent view.
- Use the Family Editor to create a callout head family to define the shape of the callout head and the information that it contains.
- In a project, create a callout tag to specify the callout head family to use and the radius of the corners of the callout bubble.
- To define the callout head and the corner radius of the callout bubble, click Manage tab
Settings panel
Additional Settings drop-down, and select Callout Tags.

The callout tag consists of the following parts:
Callout bubble. The line drawn around part of the parent view to define the callout area.
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Leader line. A line that connects the callout head to the callout bubble.
Reference label. For reference callouts only. Text displayed in a callout tag to provide information about the callout.
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Callout head. A symbol that identifies the callout. When you place the callout on a sheet, the callout head displays the corresponding detail number and sheet number by default.