Returns a ChartText
object representing a trendline label.
The contents of the Trendline label are generally controlled through the Trendline.ShowEquation
values. The default text can be overridden in .xlsx with the ChartText.Text
property in the TrendlineLabel object. Starting in OfficeWriter 8.7
you can override the text in .xls files as well. You can also use this property to manipulate the formatting of the label.