an class='kw'>=</span> <span class='st'>"left"</span>, <span class='kw'>baseline</span> <span class='kw'>=</span> <span class='st'>"middle"</span>) <span class='kw'>%&gt;%</span>

<span class='co'># add atomic mass text</span>
<span class='fu'>ly_text</span>(<span class='no'>symx</span>, <span class='no'>massy</span>, <span class='kw'>text</span> <span class='kw'>=</span> <span class='no'>atomic.mass</span>, <span class='kw'>data</span> <span class='kw'>=</span> <span class='no'>elements</span>,
  <span cla