What does "Prf" stand for in weapon ranks?

[shrimp]

I've come to understand what it means, it seems to mean that it's a personal weapon.

So anyone who knows what Prf stands for?

 

My guesses:

 

1. Personal-as-F (a little informal, but conveys exclusivity directly)

2. Preferred (but that doesn't really convey any exclusivity) 

 

I can't sleep because of this, I need more than guesses I need answer with 100% certainty.

Edited September 13, 2017 by shrimp

[Maritisa]

Preferred. Either it's a person's preferred weapon, or the weapon prefers a wielder.

It's a strange word choice. Japan actually just uses a star, which makes a little more sense.

[MadJak91]

I guess something like Professor? You need a PhD to use the weapon. Yeah.

It might also stand for: People are f-ed. Which is often the case.

[Magical Glace]

I always read it as Professional.

[MisterIceTeaPeach]

For me it stands for preference / preferred.

Edited September 13, 2017 by Aya Shameimaru

[X-Naut]

Proof of purchase. Can't use that rapier without a license, ya know!

[Vaximillian]

I always thought it means preferential.