aramdir">[in]</td><td class="paramname">fname</td><td>A filename to pass to the terminal in the event the terminal is a file type (e.g. GNUPLOT_TERMINAL_PNG). </td></tr>
    <tr><td class="paramdir">[out]</td><td class="paramname">err</td><td>An optional errors-based object that if provided can be used to retrieve information relating to any errors encountered during execution. If not provided, a default implementation of the errors class is used internally to provide error handling. Possible errors and war