This add-on enables users to add notes, or annotations, to Web pages.
To switch the annotator on, left-click the pencil icon in the Add-on Bar. The icon should turn yellow: this indicates that the annotator is active. To switch it off, click it again. Switching it on/off only stops you from entering annotations: existing annotations are still displayed.
When the annotator is active and the user moves the mouse over a page element that can be annotated, the annotator highlights that elements by giving it a yellow background.
If the user clicks on a highlighted element the add-on opens a dialog for the user to enter the annotation. When the user hits the annotation is saved.
Elements which have been annotated are displayed with a yellow border: when the user moves the mouse over one of these elements, the add-on displays the annotation associated with that element.
To view all annotations in a list, right-click the pencil icon.
The add-on is deactivated in private browsing mode, meaning that new annotations can't be created although existing ones are still shown. On exiting private browsing the add-on returns to its previous activation state.
It is not possible to delete annotations, or to edit them after creating them, but it would be simple to add this.
When right-clicking the annotator icon the add-on bar's context-menu is shown: this is tracked by bug 626326.
The list of annotations should be anchored to the widget. The annotation editor, and the annotation itself, should be anchored to the element which is annotated. The will be done when the implementation of panel-anchoring is extended.