Hello Grover,
Thank you for contacting Infragistics support!
You may find information on Chart labels, including how to use label keywords, in the following help topic - https://es.infragistics.com/help/aspnet/chart-apply-chart-text-labels .
Please, look at it and let me know if it is not what you are searching for.
Thank you for using Infragistics ASP.NET!
Best regards, Alexander Marinov