Christian Wendt wrote:

:-) you could start BP IDE, type COMP and hit Strg-F1 ... :-) In BP Comp is a FPU Type - it uses the FPU...

Yes, I know that, but neither the online help nor the manuals (now I did look it up) say something about the name "Comp"...

(i think technically it's a 73 Bit BCD packed integer; -> 18 (decimal) Digits + sign )

No, it's a signed 64 bit integer. It's just handled by the FPU, therefore BP handles it as a real type (a dubious decision, IMHO)...