protected function parseControlSymbol(Token\Control\Symbol $token, Element\Group $group) 
	{	
		// if a class exists for the symbol, instantiate it; otherwise, instantiate 
		//     a generic control symbol element
		// keep in mind, class_exists() requires a fully-qualified namespace
		// 
		if (array_key_exists($token->getSymbol(), self::$symbols)) {
			// get the symbol's name
			$name = self::$symbols[$token->getSymbol()];
			$name = ucfirst($name);
			$classname = "Jstewmc\\Rtf\\Element\\Control\\Symbol\\$name";
			if (class_exists($classname)) {
				$symbol = new $classname();	
			} else {
				$symbol = new Element\Control\Symbol\Symbol();
				$symbol->setSymbol($token->getSymbol());
			}
		} else {
			$symbol = new Element\Control\Symbol\Symbol();
			$symbol->setSymbol($token->getSymbol());	
		}
				
		// set the symbol's parameter
		$symbol->setParameter($token->getParameter());
		$symbol->setIsSpaceDelimited($token->getIsSpaceDelimited());
		
		// append the element
		$symbol->setParent($group);
		$group->appendChild($symbol);
		
		return;
	}