Rendering of the source text

<?xml version="1.0"?>
<model xmlns="http://www.cellml.org/cellml/1.1#" xmlns:cmeta="http://www.cellml.org/metadata/1.0#" cmeta:id="TempR" name="TempR">

<import xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="Units.cellml">
<units name="UnitP" units_ref="UnitP"/>
<units name="UnitQ" units_ref="UnitQ"/>
<units name="UnitR" units_ref="UnitR"/>

</import>

<component name="TempR">
<variable name="Pi" public_interface="out" units="UnitP"/>
<variable name="Po" public_interface="in" units="UnitP"/>
<variable name="Qi" public_interface="in" units="UnitQ"/>
<variable name="Qo" public_interface="out" units="UnitQ"/>
<variable name="R" public_interface="in" units="UnitR"/>


<math xmlns="http://www.w3.org/1998/Math/MathML"><apply><eq/><ci>Pi</ci><apply><plus/><ci>Po</ci><apply><times/><ci>R</ci><ci>Qi</ci></apply></apply></apply><apply><eq/><ci>Qo</ci><ci>Qi</ci></apply></math>
</component>

</model>