public function setFont($font) {

		if(false === is_string($font)) {
			return trigger_error(sprintf('Argument 1 passed to %s() must be of the type string, "%s" given', __METHOD__, gettype($font)), E_USER_ERROR);
		}

		$file = new File($font);

		if(false === $file -> exists()) {
			return trigger_error(sprintf('Argument 1 passed to %s() must be an existing font', __METHOD__), E_USER_ERROR);
		}

		$this -> font = $file;

		return $this;
	}