         </div>
    </div>

                <h3 id="method_has">
        <div class="location">at line 107</div>
        <code>            public            Boolean
    <strong>has</strong>(integer $offset)</code>
    </h3>
    <div class="details">
        <p>Returns true if a layer at offset is preset</p>
        <p>
</p>
        <div class="tags">
                            <h4>Parameters</h4>

                    <table>
                    <tr>
                <td>integer</td>
                <td>$off