this is typically the time required to display both the even and odd
fields of a frame of video data.
- If <interval> is set to a value of 0, buffer swaps are not synchron-
- ized to a video frame. The <interval> value is silently clamped to
+ If <interval> is set to a value of 0, buffer swaps are not synchro-
+ nized to a video frame. The <interval> value is silently clamped to
the maximum implementation-dependent value supported before being
stored.