I have no idea what this used for, googling it and searching help came up empty, yet it seems like it might be pretty fundamental?
Maybe it is a way to link a field to a predictive search… [UPDATE: NO!] that’s something else I haven’t got my head around. ie You can right click on a field which will take you to Predictive Search Maintenance, where you can setup multiple named predictive searches with associated BAQs driving them… but how does any one of these get associated with the text box that you right-clicked from?
Probably got my wires completely crossed here… UPDATE: yes see my reply on Predictive Search below