ecmascript:
function initialize() {
    // Create nodes directly in the parent scene
    scene = Browser.currentScene;

	// TODO scene.protoDeclarations not defined in
	// https://www.web3d.org/documents/specifications/19777-1/V3.3/Part1/functions.html
	// but Table 7.5 — Execution context properties does define .protos
	// For precise clarity, consider deprecating/renaming .protos as .protoDeclarations
	
    // Look through proto declarations for ColoredSphere
//  protoDecls = scene.protoDeclarations;
    protoDecls = scene.protos;

    var protoDecl;

    for(i=0; i < protoDecls.length; i++) {
        if (protoDecls[i].name == 'ColoredSphere')
            protoDecl = protoDecls[i];
    }

    // Create an instance of RedSphere
    instance = protoDecl.newInstance();

    // Set the color field to Red
    instance.color = new SFColor(1,0,0);

    // Add the created proto to the scene
    scene.rootNodes[0] = instance;
}