Casio FC-200 Financial Consultant

[Samy]

Hello fellows,
I've a question for you experienced guys... I'm trying to get the maximum of my fc200 and I observe some limitations or even missing info in manual:
How can I call one program inside other program?
When I insert "Prog 0" in prog 1 the error comes after "0" indicating that syntaxes is correct but no "exe" command to go ahead and this should be a usefull feature to work with subroutines.

Follow my pseudo-random # function based in hp (seed in A with initial value: 0.5284163)

Frac (Ax997)->A

Regards
Samy