Reports, without changing anything, whether the reader is inside a mounted
chart and what their screen reader last spoke for their position.
Registered by the chart alongside its navigator, and read at call time, so
it answers for the moment it is asked rather than for when the chart
mounted. position is null when the reader is outside the chart, or
inside it but not yet on a data point.
Reports, without changing anything, whether the reader is inside a mounted chart and what their screen reader last spoke for their position.
Registered by the chart alongside its navigator, and read at call time, so it answers for the moment it is asked rather than for when the chart mounted.
positionisnullwhen the reader is outside the chart, or inside it but not yet on a data point.