VarAC - HF discussion forum

Version 2.7.2 looks really exciting, and you bet I will be installing and using it tomorrow.

I read the following in the announcement "Auto exchange & logging of NAME, QTH, LOCATOR using VarAC TAGs​". What does this mean? What is a VarAC TAG, and what do I need to do to have this auto exchange and logging happen?

Thanks in advance, Joe WD4KAV