an class='fu'>label_vjust_reg</span><span class='op'>(</span><span class='va'>data</span>, label_vjust <span class='op'>=</span> <span class='st'>"middle"</span>, <span class='va'>...</span><span class='op'>)</span>

<span class='fu'>label_lineheight_reg</span><span class='op'>(</span><span class='va'>data</span>, label_lineheight <span class='op'>=</span> <span class='fl'>1</span>, <span class='va'>...</span><span class='op'>)</span>

<span class='fu'>label_location_reg</span><span class='op'>(</span><span