I agree with BrianT, maybe Microengineeringlabs don't wan't people to get the updated manual via pdf.
The manual has some insight on the new LONG format; some new DIG modifiers (0-9, instead of 0-4) SDEC and other issues but it lacks on good support.
I got mine back in 2003 when I got PBP at Rentron..... a pitty they don't upload the new manual to their website (melabs that is).
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