[Question] How to add a vertical line

[TheTimKiely]

Hi,
Sorry if I'm missing something obvious. I have a time series line chart and I'd like to add a vertical line to mark certain points in time.
Is this supported? I can't find any reference to this functionality.
Thanks!

[netil]

Hi @TheTimKiely, I'm not sure but some vertical line like below example?

• https://naver.github.io/billboard.js/demo/#Grid.OptionalXGridLines