These pages outline the chart configuration options, and the methods and properties of Highcharts objects.
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Whether to allow the tooltip to render outside the chart's SVG
element box. By default (false), the tooltip is rendered within the
chart's SVG element, which results in the tooltip being aligned
inside the chart area. For small charts, this may result in clipping
or overlapping. When true, a separate SVG element is created and
overlaid on the page, allowing the tooltip to be aligned inside the
page itself. Beware that with this option active, CSS classes on the
chart's target container, with classnames matching the pattern
'highcharts-*', will be set on the tooltip as well. This is done to
support theming for tooltips with this option.
Defaults to true if chart.scrollablePlotArea is activated,
otherwise false.