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<h2><font color="#009999">25.4 Sequence Diagrams (cont.)</font></h2>
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<ul>
<li>Objects are boxes w/underlined text</li>
<li>Text might be:
<ul>
<li><tt>object_name : ClassName</tt></li>
<li><tt>object_name</tt></li>
<li><tt>: ClassName</tt></li>
</ul>
</li>
<li>Dashed vertical line is the <i>lifeline</i></li>
<ul>
<li>Used to sequence events</li>
</ul>
</li>
<li>Rectangles are <i>activation bars</i></li>
<ul>
<li>Object is executing a method (or waiting)</li>
</ul>
</li>
<li>Arguments are not listed</li>
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