Add a reference area inside a chart
{% reference_area x_min="2022-01-01" x_max="2022-09-01" /%}
label_options={ position = value align = value color = "string" background_color = "string" padding = 0 border = { ... } text = { ... } }
effects
enum
string
number
object
area_options={ color = "string" opacity = 0 border = { ... } }