# Welcome to the Highcharts Maps JS (highmaps) Options Reference

These pages outline the chart configuration options, and the methods and properties of Highcharts objects.

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# plotOptions.heatmap.dataLabels.verticalAlign

The vertical alignment of a data label. Can be one of `top`, `middle` or `bottom`. The default value depends on the data, for instance in a column chart, the label is above positive values and below negative values.