The invention concerns a method for playing data in a digital video disc apparatus in which the data was recorded onto a non-DVD optical storage medium in a DVD format. The real-time glucose estimator receives at least one measurement corresponding to glucose level. The method can further include modifying the XPATH expression to account for a dominant attribute required by the template when the XPATH expression does not match the template expression and returning the modified XPATH expression. The engaging member can wedge between the engaging ring and an end portion in the circumferential direction of the relief surface of the anvil, so that the anvil is locked with respect to rotation relative to the body case. The system is arranged to provide content in response to the remote request after the remote authentication has been received and the system has verified the remote user’s authorization for access.