Draw some text in a chart

Is there a way to draw some text/shapes in a chart?
Se picture, the line and text in red color.

You can render html elements above the chart: divs with text and div with red background.

I don’t understand how, do you have an example of this?

Hello AakeTraak
You can try the next simple code sample:

[code]

DHTMLX test
Red area Blue area Green area
[/code] And you will get result on the picture:
You can draw any mark lines or add any custom text you need similar way