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<Notebook>
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   <TextCell style="Title" >
    <Text>&lt;html>&lt;head>&lt;meta name="qrichtext" content="1" />&lt;/head>&lt;body style=" white-space: pre-wrap; font-family:MS Shell Dlg; font-size:8.25pt; font-weight:400; font-style:normal; text-decoration:none;">&lt;p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-family:Arial; font-size:38pt; font-weight:600; color:#000000;">Subtype and Supertype&lt;/p>&lt;/body>&lt;/html></Text>
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    <TextCell style="Section" >
     <Text>&lt;html>&lt;head>&lt;meta name="qrichtext" content="1" />&lt;/head>&lt;body style=" white-space: pre-wrap; font-family:MS Shell Dlg; font-size:8.25pt; font-weight:400; font-style:normal; text-decoration:none;">&lt;p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-family:Times; font-size:18pt; font-weight:600; color:#000000;">Connector Classes&lt;/p>&lt;/body>&lt;/html></Text>
    </TextCell>
    <InputCell style="Input" closed="true" >
     <Input>type Voltage = Real(unit = "V");</Input>
     <Output></Output>
    </InputCell>
    <TextCell style="Text" >
     <Text>&lt;html>&lt;head>&lt;meta name="qrichtext" content="1" />&lt;/head>&lt;body style=" white-space: pre-wrap; font-family:MS Shell Dlg; font-size:8.25pt; font-weight:400; font-style:normal; text-decoration:none;">&lt;p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-family:Times New Roman; font-size:12pt; color:#000000;">&lt;/p>&lt;/body>&lt;/html></Text>
    </TextCell>
    <InputCell style="Input" closed="true" >
     <Input>type Current = Real(unit = "A");</Input>
     <Output></Output>
    </InputCell>
    <TextCell style="Text" >
     <Text>&lt;html>&lt;head>&lt;meta name="qrichtext" content="1" />&lt;/head>&lt;body style=" white-space: pre-wrap; font-family:MS Shell Dlg; font-size:8.25pt; font-weight:400; font-style:normal; text-decoration:none;">&lt;p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-family:Times New Roman; font-size:12pt; color:#000000;">&lt;/p>&lt;/body>&lt;/html></Text>
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     <Input>connector Pin
  Voltage     v;
  flow Current   i;
end Pin;        </Input>
     <Output></Output>
    </InputCell>
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    <TextCell style="Section" >
     <Text>&lt;html>&lt;head>&lt;meta name="qrichtext" content="1" />&lt;/head>&lt;body style=" white-space: pre-wrap; font-family:MS Shell Dlg; font-size:8.25pt; font-weight:400; font-style:normal; text-decoration:none;">&lt;p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-family:Times; font-size:18pt; font-weight:600; color:#000000;">Resistor&lt;/p>&lt;/body>&lt;/html></Text>
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    <TextCell style="Text" >
     <Text>&lt;html>&lt;head>&lt;meta name="qrichtext" content="1" />&lt;/head>&lt;body style=" white-space: pre-wrap; font-family:MS Shell Dlg; font-size:8.25pt; font-weight:400; font-style:normal; text-decoration:none;">&lt;p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-family:Times New Roman; font-size:12pt; color:#000000;">The subtype relation between types is analogous to the subset relation between sets. If we have one type Temperature that contains all temperature values and another type Winter-Temperature that contains only negative temperature values, then we say that Temperature is a supertype of Winter-Temperature. This also implies that Winter-Temperature is a subtype of Temperature.&lt;br />&lt;br />The supertype relation, on the other hand, is the inverse of the subtype relation. Since &lt;span style=" font-family:Courier New;">TempResistor&lt;/span> is a subtype of &lt;span style=" font-family:Courier New;">Resistor&lt;/span>, then &lt;span style=" font-family:Courier New;">Resistor&lt;/span> is a supertype of &lt;span style=" font-family:Courier New;">TempResistor&lt;/span>. &lt;br />&lt;/p>&lt;/body>&lt;/html></Text>
    </TextCell>
    <InputCell style="Input" closed="true" >
     <Input>model Resistor  
  Pin       p, n                "Positive and Negative Pins";
  Voltage     v;
  Current     i;
  parameter Real R(unit = "Ohm")          "Resistance";
equation 
  v = R*i;
end Resistor;</Input>
     <Output></Output>
    </InputCell>
    <TextCell style="Text" >
     <Text>&lt;html>&lt;head>&lt;meta name="qrichtext" content="1" />&lt;/head>&lt;body style=" white-space: pre-wrap; font-family:MS Shell Dlg; font-size:8.25pt; font-weight:400; font-style:normal; text-decoration:none;">&lt;p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-family:Times New Roman; font-size:12pt; color:#000000;">&lt;/p>&lt;/body>&lt;/html></Text>
    </TextCell>
    <InputCell style="Input" closed="true" >
     <Input>model TempResistor                  "Temperature dependent Resistor"
  Pin       p, n                "Positive and Negative Pins";
  Voltage     v;
  Current     i;
  parameter Real R(unit = "Ohm")          "Resistance at reference Temperature";
  parameter Real RT(unit = "Ohm/degC")   = 0     "Temperature dependent Resistance";
  parameter Real Tref(unit = "degC")   = 20    "Reference Temperature";
  Real        Temp           = 20    "Actual Temperature";
equation 
  v = i*(R + RT*(Temp - Tref));
end TempResistor;</Input>
     <Output></Output>
    </InputCell>
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</Notebook>
