| 摘要 |
Annotations in CAD drawings are given fixed sizes so that CAD application will generate the annotations at the fixed size even though modeled objects within the CAD drawing are scaled in accordance with a paper space scale selected by the CAD designer. The annotations generally comprise text annotations and graphic annotations, including one or more of text, dimensions, hatch patterns, and symbols, and are represented as annotation objects having multiple properties, such as size, visibility, position and rotation.
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