What is the TASTE RATING in BeerSmith 2?

At the top of any recipe printed with BeerSmith there is a "Taste Rating".
Figures seem to range between 30 and 50.
What is this?  How is it calculated?
(eg. from the grain bill and hop quantities?  If so, how?)
Does it correlate in any way to the BJCP rating guidelines?

It's a tasting score based on the BJCP score sheet. How you use it is up to you. It can be your own score or represent contest scores.

Yeah, but it is being generated automatically by BeerSmith.
So my question is how? - based on what parameters?

Nope. The default number is arbitrary. It's not calculated by anything.