Rational Design Management provides an XML document that essentially represents the hot spot information that we are proposing in the Diagram resource.
The following is an example
<parts>
<line view="https://example.com/dm/models/68#_Ge3pcGUMEeCqq7wOp5XKAQ">
<point x="63" y="100"></point>
<point x="69" y="140"></point>
<point x="59" y="141"></point>
<point x="53" y="101"></point>
<point x="63" y="100"></point>
</line>
<line view="https://example.com/dm/models/68#_qoKREGQ2EeCnL-7l72kGAA">
<point x="373" y="314"></point>
<point x="373" y="368"></point>
<point x="363" y="368"></point>
<point x="363" y="314"></point>
<point x="373" y="314"></point>
</line>
<line view="https://example.com/dm/models/68#_mXno8GQ2EeCnL-7l72kGAA">
<point x="303" y="220"></point>
<point x="348" y="220"></point>
<point x="348" y="230"></point>
<point x="303" y="230"></point>
<point x="303" y="220"></point>
</line>
<line view="https://example.com/dm/models/68#_ctEPMGQ2EeCnL-7l72kGAA">
<point x="299" y="165"></point>
<point x="272" y="197"></point>
<point x="264" y="190"></point>
<point x="291" y="158"></point>
<point x="299" y="165"></point>
</line>
<line view="https://example.com/dm/models/68#_sFgZQGO8EeCnL-7l72kGAA">
<point x="344" y="158"></point>
<point x="384" y="201"></point>
<point x="377" y="208"></point>
<point x="336" y="165"></point>
<point x="344" y="158"></point>
</line>
<line view="https://example.com/dm/models/68#_oJ1N4GO8EeCnL-7l72kGAA">
<point x="125" y="158"></point>
<point x="165" y="158"></point>
<point x="165" y="168"></point>
<point x="125" y="168"></point>
<point x="125" y="158"></point>
</line>
<line view="https://example.com/dm/models/68#_d2OtkGOwEeCnL-7l72kGAA">
<point x="465" y="239"></point>
<point x="643" y="275"></point>
<point x="642" y="285"></point>
<point x="463" y="249"></point>
<point x="465" y="239"></point>
</line>
<shape view="https://example.com/dm/models/68#_FFKrkGUMEeCqq7wOp5XKAQ" name="donor" x="9" y="21" width="84" height="80"></shape>
<shape view="https://example.com/dm/models/68#_gK77IGOwEeCnL-7l72kGAA" name="client" x="9" y="141" width="118" height="54"></shape>
<shape view="https://example.com/dm/models/68#_VijnMGOwEeCnL-7l72kGAA" name="jetty" x="309" y="368" width="118" height="54"></shape>
<shape view="https://example.com/dm/models/68#_UlKK0GOwEeCnL-7l72kGAA" name="derby" x="643" y="249" width="88" height="81"></shape>
<shape view="https://example.com/dm/models/68#_UgsqsGQ2EeCnL-7l72kGAA" x="187" y="194" width="118" height="54"></shape>
<shape view="https://example.com/dm/models/68#_ZMp6YGOwEeCnL-7l72kGAA" x="348" y="205" width="118" height="54"></shape>
<shape view="https://example.com/dm/models/68#_X04PIGOwEeCnL-7l72kGAA" x="257" y="109" width="118" height="54"></shape>
<shape view="https://example.com/dm/models/68#_TLwH4GOwEeCnL-7l72kGAA" name="Server" x="165" y="9" width="394" height="307"></shape>
</parts>