Subject: I've only seen that reference.
Author:
Posted on: 2009-01-08 02:36:00 UTC
Of course, there is another referencing system, which is where we get World One (ie, the Real World).
As I recall from (read: I've just checked) Tawaki's mission 29, the long version is the Despatch Continuum Identification Code, presumably usually used internally by Despatch, who need to be precise about these things. The World One etc version seems to be used primarily by the DES. Both of them are apparently gaining more currency (New Caledonia has been described several times as in World One, I think, and obviously Tawaki's used the long form) but I don't think either of them are standard.
My current theory is that the DES are numbering worlds which have doors to HQ (with Earth being World One out of courtesy; presumably Origin was World Zero), while Despatch are trying to be organised about it. Most of the rest of the PPC doesn't care either way.
However, as stated, that's just how I'm mentally rationalising it. It may be right, it may be wrong.
hS