Interpreting map file naming convention

[bearmount]

Hey all!
i've researched, read, and figured out out 90 percent of my issues. and i thank all who have contributed!

what does the "FEU" in the below file indicate?
Primo_FEU_10Q4_(NQ_3DL_ExtPost_TTS_PHO_Google_JV_CAR_20110321)_(v2.1)_.lyc
when time permits i would appreciate your assistance!
Thank ya!

my project:
i'm attempting to repace Q2 MAP FILES TO Q3
gm5150
iGO_NextGen_WinCE_9.18.40.671989
NA_here_q2 maps
tmc is working
TTS is working (LOQ 7)
The only error i have (not concerned) - REPOSITORY: (OASIS_SQLITE) not freed properly refcnt:1

[noknoi]

Is simple: FEU = Full Europe
In this case Full Europe 2010 quarter 4