Hmmm... or perhaps CCIP's more technically-minded explanation is more to the point. Ah, I'm always one to go wool-gathering...
Edit: Oh happy day, from Bilge Rat to Nub! And a much better-looking avatar!
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Bernaaaaaard!
Current games: UBOAT ... Victory at Sea Pacific ...
Ye olde games: SH3 + GWX3 Gold ... SH4 plain vanilla ... Steam and Iron ... Jutland ... War Plan Pacific ...
...and many board games!