Rendering of the source text

<?xml version='1.0' encoding='UTF-8'?>
<model name="time" xmlns="http://www.cellml.org/cellml/1.1#" xmlns:cellml="http://www.cellml.org/cellml/1.1#" xmlns:xlink="http://www.w3.org/1999/xlink">
    <import xlink:href="units.cellml">
        <units name="ms" units_ref="ms"/>
    </import>
    <component name="time">
        <variable initial_value="0.0" name="time" public_interface="out" units="ms"/>
    </component>
</model>