td><td>Whether or not the z-axis helper should be visible.</td><td>boolean</td><td>true</td></tr><tr><td><code>size </code></td><td>The size of the helper UI (axes/planes).</td><td>number</td><td>1</td></tr><tr><td><code>translationSnap</code></td><td>By default, 3D objects are continuously translated.<br>If you set this property to a numeric value (world units), you can define in which steps the 3D object should be translated.<br>Set to <code>null</code> to disable snap.</td><td>union</td><td>null</td></tr