<help>Optional file to write the horizons used to compute the shading to</help>
</parameter>
<referencename="ID_RESTRICT"/>
<referencename="TIME_RESTRICT"/>
<help><a href="https://models.slf.ch/docserver/meteoio/html/classmio_1_1ProcShade.html">Apply shading to radiation measurements</a>. The shading from the surrounding is either computed from the DEM (provided with the DEM plugin) or from a provided horizon file.</help>
<help><a href="https://models.slf.ch/docserver/meteoio/html/classmio_1_1ProcShade.html">Apply shading to radiation measurements</a>. The shading from the surrounding is either computed from the DEM (provided with the DEM plugin) or from a provided horizon file. If an output file is provided, the horizons will be written back to this output file (if at least one has been computed from the DEM).</help>
<help>Cloudiness model to use (default: the model that belongs to the chosen ILWR parametrization). See the <a href="https://models.slf.ch/docserver/meteoio/html/classmio_1_1TauCLDGenerator.html">atmospheric transmissivity</a> generator based on cloud cover fraction for more.</help>