code: function iframeBoilerScript() {
  
  	// Called from parent-window:
  	window.__run__ = function(methodName, args, cb, deferred) {
  
  		var isDeferred = false;
  
  		window.deferred = function() {
  			isDeferred = true;
  			return deferred;
  		};
  
  		function callback() {
  			return cb.apply(this, arguments);
  		}
  
  		// Define fallback transfer() method:
  		callback.transfer = function() {
  			// Remove [transfers] list (last argument)
  			return cb.apply(this, [].slice.call(arguments, 0, arguments.length - 1));
  		};
  
  		if (cb) {
  			args.push(callback);
  		}
  
  		var result = window[methodName].apply(window, args);
  
  		window.deferred = function() {
  			throw new Error('Operative: deferred() called at odd time');
  		};
  
  
  		if (!isDeferred && result !== void 0) {
  			callback(result);
  		}
  	};
  }
docs: The boilerplate for the Iframe Context
  NOTE:
  this'll be executed within an iframe, not here.
  Indented @ Zero to make nicer debug code within worker