The annotations can be public, private, or group accessible. In-line annotations are marked with a certain font and color. This makes them distinguishable from the original document. The font and color is chosen by the author of the annotation, but the reader can change it. The reader can also turn the insertion of annotations on or off, or filter them by owner, color, age, and subject.
Annotations are fully searchable as well.
When annotations are longer than a few lines or text, they are not added to the document as in-line notes, since this disrupts the flow of the original document. The Index allows readers to skip to different annotations in the document. 2.3 Third Voice Third Voice is a commercial product for annotating World-Wide Web documents, which is freely available from their Web site. In order to use this software, a reader must download the application and register with Third Voice. A small menu-like icon is then displayed in the top left corner of the browser window throughout the reader's Web session.