Logging of SIEVE actions?

[Harald Tveit Alvestrand]

Hello,
this may be naive, obvious or whatever, but here goes:

Is there any log that shows the actions a SIEVE script took on my email?
The reason is, of course, that my email is business-critical, and I am just 
going to start using SIEVE now. If I miswrite the filters, I would very 
much like to know that I've messed up.

Thanks for any info!

                 Harald T. Alvestrand