# 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.

# plotOptions.packedbubble.layoutAlgorithm.parentNodeOptions.maxSpeed

Verlet integration only. Max speed that node can get in one iteration. In terms of simulation, it's a maximum translation (in pixels) that node can move (in both, x and y, dimensions). While `friction` is applied on all nodes, max speed is applied only for nodes that move very fast, for example small or disconnected ones.