RefPtrIn this example, a new Node object is created with `new Node()` and stored in a RefPtr variable called `node`. The setAttribute function is then called on `node` to set the value of the "id" attribute to "myNode". This function is commonly used in packages and libraries that provide a way to manipulate DOM (Document Object Model) objects, such as the WebCore package in the WebKit library.node = new Node(); node->setAttribute("id", "myNode");