When an annotation set includes several annotation planes, to activate a plane, you either double-click it or use the Activate View contextual command.
The active annotation plane is orange-colored in the specification tree.
The active annotation plane frame is orange-colored in the geometry and its reference axis appears.
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Double-click the Front View.1 annotation plane.
The Front View.1 is orange-colored in the specification tree. 
The Front View.1 frame is orange-colored in the geometry and its reference axis appears. 
