tChartAnnotation where?

VCL TMS VCL Chart
1

In what unit is the tChartAnnotation?

2

I cannot compile my program, tChartAnnotation is unknown.
In what unit is it declared?

var
...
...
ca : tChartAnnotation;
begin
Chartet.Panes[0].Series[0].AddSinglePoint(pointarray[i].Dager,pointarray[i].Faktura);
ca:=Chartet.Panes[0].Series[0].Annotations.add;
...
...

Kind regards,
Ole