rk>~</mark> followed by an integer number. Simple polyphony is managed that way.<br/>
    So usually most scores start as follow: <code>=1 ~1</code>. This means that we are in the first voice of the first part.
</p>
<p class="bg-warning">Warning: staff and voice definitions are required (not optional) in the score.</p>


<div class="page-header">
    <h2>Key Signatures</h2>
</div>

<p>
    A key signature can be defined using the <mark>key</mark> command,<br/>
    Examples: to define a <em>C major key</em> 