horizontal-layout">Example 13: Vertical and horizontal Layout</h3>
<p>As can be seen in the previous example, by default, the layout of the elements is vertical. You can change this layout by using  <code>hgroup(...)</code> and  <code>vgroup(...)</code>. For example to make the layout horizontal you can write:</p>
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mute = *(1-checkbox("mute"));
monoamp = *(vslider("volume[style:knob]", 0.