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9 <title>Annotations and Markers
</title>
13 <para>Many entities in the CDM extend
<classname>AnnotatableEntity
</classname>. This class contain two properties
<varname>annotations
</varname> and
<varname>markers
</varname>.
<classname>Annotation
</classname>s represent short (currently
4096 characters) statements made by users about the object.
<classname>Marker
</classname>s are binary (true or false) flags set on an object - markers are be typed using the
<classname>MarkerType
</classname> vocabulary allowing users to mark objects as
<emphasis>NOT_CHECKED
</emphasis>,
<emphasis>COMPLETE
</emphasis> or any other term.
</para>