How to Identify the Connection Fingers on a PCB?

For gold plated edge connection fingers on a PCB these are usually numbered on one side of the board and lettered on the opposite side. Thus you would identify these terminals numbered 1, 2, 3, ... on the one side and lettered A, B, C, ... on the opposite side. These identifiers, of course, would not appear on a parts list because they are part of the PCB and not parts.

Using EEschema I entered a number for the reference designator and it was rejected. When I entered just a letter and produced a net list the program appended a number such that A became A1, B became B1, etc. In the situation where there are two or more sets of these fingers I would use non-class designation letters WT (meaning wiring tie point). See IEEE Std 315, Clause 22.4 list of class designation letters. IEEE Std 315-1975 is available at <http://www.metalwebnews.com/manuals/electric-symbols.pdf>. In EEschema I assigned WT1-1, WT1-2, etc. and WT1-A, WT1-B, etc. When I produced a net list the auto annotation surprisingly did not change WT1-1, WT1-2, etc. but again changed WT1-A to WT1-A1, WT1-B to WT1-B1, etc.

Kicad doesn't understand that the hyphen means terminal number. I am sure that plenty of PCBs have been done with Kicad having these fingers. How is this done using Kicad for identifying the fingers (terminals) and showing electrical connectivity? What is the process?