Hidden Annotation is used to toggle between showing the Visible and the Invisible annotations respectively in a drawing. When Hidden Annotations is enabled, all annotations with Visibility set to No will become temporarily visible and annotations with Visibility set to Yes will be temporarily hidden. All normal functions can be used on the annotations when Hidden Annotation is enabled.

If a new annotation, which by default has Visibility set to Yes, is created when Hidden Annotation is enabled, the annotation will not be displayed. It will become visible once Hidden Annotation is disabled. A message informs the user about this in Messages window, under User tab.

It is not allowed to enable or disable Hidden Annotations when one or more annotations are selected in the drawing. They have to be deselected before changing mode. A warning message informs the user about this in Messages window, under User tab.