Berikut adalah contoh componen WYSIWYG Editor pada zkoss
<zk>
<ckeditor id="ed" onChange="ta.value = self.value">
<attribute name="value">
<table width="200" cellspacing="1" cellpadding="1" border="1">
<tbody>
<tr style="background: #B7B313; color:white;">
<td>First Name</td>
<td>Last Name</td>
</tr>
<tr>
<td>Jone</td>
<td>Hayes</td>
</tr>
<tr>
<td>Mary</td>
<td>Bally</td>
</tr>
</tbody>
</table>
</attribute>
</ckeditor>
<textbox id="ta" rows="6" width="100%" onChange="ed.value = self.value"/>
</zk>
Reference : https://www.zkoss.org/zksandbox/#g2