The main documentation of the Initialized_Trace Procedure contains additional explanation of this code listing.
function Initialized_Trace (Trace) result(Initialized) ! Input variable. type(Trace_type), intent(in) :: Trace ! Trace to be checked. ! Output variable. type(logical) :: Initialized ! Initialized condition boolean. !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ! Verify requirements - none. ! Set initialized boolean. Initialized = ASSOCIATED(Trace%Initialized) ! Verify guarantees - none. return end function Initialized_Trace