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- <title>What is an Annotation?</title>
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- <a href="../Annotations.html" accesskey="t"><img alt="top" src="../../images/up.gif" /></a>
- <a href="about_reading_annotations.html" accesskey="n"><img alt="next"
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- <h1><a name="What">What is an Annotation?</a></h1>
-
- <p>Annotations are comments, notes, explanations, or other types of external
- remarks that can be attached to a Web document or a selected part of the
- document. As they are external, it is possible to annotate any Web document
- independently, without needing to edit that document. From the technical
- point of view, annotations are usually seen as <strong>metadata,</strong> as
- they give additional information about an existing piece of data. In this
- project, we use a special <strong><a
- href="http://www.w3.org/RDF/">RDF</a></strong> <a
- href="http://www.w3.org/2000/10/annotation-ns">annotation schema</a> for
- describing annotations.</p>
-
- <p>Annotations can be stored locally or in one or more <strong>annotation
- servers</strong>. When a document is browsed, Amaya queries each of these
- servers, requesting the annotations related to that document. Currently Amaya
- presents annotations with pencil annotation icons ( <img
- src="../../images/annot.png" alt="Annotation pencil icon" /> )that are visually
- embedded in the document, as shown in the figure below. If the user
- single-clicks on an annotation icon, the text that was annotated is
- highlighted. If the user double-clicks on this icon, the annotation text and
- other metadata are presented in a separate window.</p>
-
- <p style="text-align: center"><img src="../../images/annotationicon.png"
- alt="annotation icon (= pencil)" /></p>
-
- <p>An annotation has many properties including:</p>
- <ul>
- <li>Physical location: is the annotation stored in a local file system or
- in an annotation server</li>
- <li>Scope: is the annotation associated to a whole document or just to a
- fragment of this document</li>
- <li>Annotation type: 'Annotation', 'Comment', 'Query', ...</li>
- </ul>
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