el_fontface <span class='op'>=</span> <span class='st'>"plain"</span>, <span class='va'>...</span><span class='op'>)</span>

<span class='fu'>label_hjust_pos</span><span class='op'>(</span><span class='va'>data</span>, label_hjust <span class='op'>=</span> <span class='st'>"center"</span>, <span class='va'>...</span><span class='op'>)</span>

<span class='fu'>label_vjust_pos</span><span class='op'>(</span><span class='va'>data</span>, label_vjust <span class='op'>=</span> <span class='st'>"middle"</span>, <