Change the variable name 'cube' to 'klein'.
@@ -37,8 +37,8 @@
<code>
var geometry = new THREE.ParametricBufferGeometry( THREE.ParametricGeometries.klein, 25, 25 );
var material = new THREE.MeshBasicMaterial( { color: 0x00ff00 } );
- var cube = new THREE.Mesh( geometry, material );
- scene.add( cube );
+ var klein = new THREE.Mesh( geometry, material );
+ scene.add( klein );
</code>