During the third year of residency (I think?) 😕 I remember the FP residents at one of the hospitals I did a rotation at were taking it around March or April of their third year of residency.
I think it just means what it means...... That people done with residency and the boards can apply as well as PGY-3s. Kind of like how both MDs and "MD eligibles" can apply for PGY1 spots.