I *think* those are US Mail carrier routing codes....look at the US Pastal service website (don't know URL offhand) for more info.

>Hey UT!
>
>Boss says, "Wouldn't it be cool if we could pre-barcode our envelopes?"
>
>"Sure boss, what do those barcodes mean?"
>
>"Dunno, let's do it."
>
>Can anyone point me in the right direction? He's talking about those half barcode jobs that live under the addressee info.
>
>Marty