Subclockflags

(typename $subclockflags
  (flags (@witx repr u16)
    ;;; If set, treat the timestamp provided in
    ;;; `subscription_clock::timeout` as an absolute timestamp of clock
    ;;; `subscription_clock::id`. If clear, treat the timestamp
    ;;; provided in `subscription_clock::timeout` relative to the
    ;;; current time value of clock `subscription_clock::id`.
    $subscription_clock_abstime
  )
)