# Welcome to the Highcharts Gantt JS (gantt) 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.accessibility.series.summary

Lang configuration for the series main summary. Each series type has two modes:

1. This series type is the only series type used in the chart

2. This is a combination chart with multiple series types

If a definition does not exist for the specific series type and mode, the 'default' lang definitions are used.

Chart and its subproperties can be accessed with the `{chart}` variable. The series and its subproperties can be accessed with the `{series}` variable.

The series index (starting from 1) can be accessed with the `{seriesNumber}` variable.