Content which is related to content being displayed on an out-of-home display screen is synchronized with being shown on an out-of-home display screen. The drilling template may include a through-bolt assembly to pivotally couple the drilling template to the object. TV command transmission between the first processing unit and the second processing unit is achieved by sending interrupt signals or reset signals. A parking brake mechanism can lock a rotation of a rotor of the electric motor and maintain a braked state by rotating an engagement pawl through a plunger of a solenoid and causing the engagement pawl to be engaged with a ratchet wheel coupled to the rotor of the electric motor. The calling code segments and the target code segments are relocated to the second address space, and references to the address-bridging code segments are replaced with references to the target code segments in the second address space. During use, the base is attached to a biological annulus, the annular body is directed adjacent the annulus, oriented such that the multi-lobular shape of the annular body valve member is aligned with the base, and the annular body is attached to the base.