Abstract: A messaging application provides a user interface through which a user is presented a view of messages related to a selected contact. The message application processes messages based on contacts related to the messages. A user can select a contact and view the messages related to that contact. In a view of messages related to a contact, messages can be organized by threads, which include a plurality of messages from multiple entities. This view is generated based in part on a parameter of a message in each thread that is related to the selected contact. The threads can be ordered based on the last message in each thread from the selected contact. When selecting and displaying only unread messages, the system reveals threads which contain unread messages from the selected contact. A list of contacts that are frequent participants in messages can be identified automatically and set as favorites.

Abstract: Apparatus is provided for measuring the numerical apertures of an optical fiber in the infrared region. The optical fiber is appropriately mounted in accordance with conventional testing standards. Infrared energy is transmitted through the optical fiber. At a predetermined distance from the end of the optical fiber, a conversion screen can be provided for transforming the emitted infrared energy into a lesser wavelength of energy. The energy distribution can be recorded with a detector compatible with the lesser wavelength energy whereby the numerical aperture can be computed from the recorded data.