
<section>
    <title>
        What is NMPlot?
    </title>
    <para>
        NMPlot is a Microsoft Windows application for viewing and
        editing sets of georeferenced data points. These data sets, also
        know as <termtext>grids</termtext>, represent measurable quantities
        that vary with geographic location. Examples include noise levels
        around an airport, monthly records of rainfall across a state,
        and water temperature measurements in a lake.
    </para>
</section>
