Help for a "Surface and Flux integrals" program

[salvomic]

thanks Alex,
I edited the first post with your corrections (they were good on the hook: I copied bad, sorry)...

I think we could separate the formulas for Flux and Surface or better specify them in the help.
Also I'm having trouble reproducing examples from books where, for facility purpose, they convert part of the double integrals into polar form: our program doesn't handle it well...

Also we could return a list with the I1,I2,I3 values (items of column vector of N(P), normal vector of the surface)...

However, Arno has already done 85% of works, already (and he, if wanted, could think to put a first version upon the Prime Software Library...) :-)