A suturing device includes a length of suture that will be delivered to the site of a PFO and placed through the tissue adjacent the opening to close the PFO. A laser light is totally internally reflected at the interface between a more optically dense medium and less optically dense medium, exciting a decaying evanescent field in the less optically dense medium. The information signal is read out from the memory. Accordingly, such damage as a crack by the mask does not occur in the pixel electrode layer. , \u201cpeoplepresenter\u201d or \u201cpeoplepresentervideo\u201d A policy manager is provided for managing roles, such that the multimedia conference may be more effectively presented to participants.