> For the complete documentation index, see [llms.txt](https://docs.chartsql.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.chartsql.com/reference/directives/overlay-series.md).

# @overlay-series

## Quick Reference

```
-- @overlay-series: sales, profit
```

## Valid Values

`List`

A comma separated list of series names that should be overlayed one on top of the other.

## Use Cases

Use `@overlay-series` to more visually clarify two series that have a relationship, but you do not want them stacked. For example, Revenue and Gross Profit.