I am still having no luck finding any more info on this.
If you go to a schematic and dxdatabook to place a part, you get the choice of the 4 symbols, .1 thru .4
however if you go and edit a part that uses hat symbol, in the CAE Decal section ONLY cap shows up.
So how this all ties together is still not very clear to me & struggling to find more related info.