lass="lineno">   19</span>&#160;                                          allowed=BSS.Solvent.waterModels(), default=<span class="stringliteral">&quot;tip3p&quot;</span>))</div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;node.addInput(<span class="stringliteral">&quot;boxsize&quot;</span>, BSS.Gateway.Length(help=<span class="stringliteral">&quot;The extent of the water shell along each axis around the solute.&quot;</span>,</div><div class="line"><a name="l00021"></a><span 