For a long web page, you may need an easy way to find where an annotation was placed. To find a dot, just click the annotation in the side panel. If applicable, the page will scroll to the associated dot on the page.
If the annotation is a general annotation, it will not have an associated dot on the page. A small indicator to differentiate the two types of annotations can be seen when annotations are in their active state.
Annotations with an associated dot display a small white triangle on the left:
General annotations have no small white triangle: