<span class="sd">        Table of pairs to draw (positions in columns i and j).</span>
<span class="sd">        If this dataframe contains columns named &quot;color&quot;,</span>
<span class="sd">        &quot;dash_radius&quot;, &quot;dash_gap&quot; or &quot;dash_length&quot;, these will</span>
<span class="sd">        be used to adjust the corresponding Pymol property of each</span>
<span class="sd">        drawn line. Dash parameters should be floats, colors can</span>
<span class="sd">        be any of t