# JS API Reference

# Welcome to the Highcharts JS Options Reference

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

Feel free to search this API through the search bar or the navigation tree in the sidebar.

# lang.numericSymbols

Metric prefixes used to shorten high numbers in axis labels. Replacing any of the positions with `null` causes the full number to be written. Setting `numericSymbols` to `null` disables shortening altogether.