this tt code is an example of a business requirement that is not business logic: 
[% IF age < 10 %]
   Hello [% name %], does your mother know you're 
   using her AOL account?
[% ELSIF age < 18 %]
   Sorry, you're not old enough to enter 
   (and too dumb to lie about your age)
[% ELSE %]
   Welcome [% name %].
[% END %]

[download]
I always considered that business logic because deciding on how to deal with potential consumers based on age would certainly be decided by the business department.

But I think Corion clarified this already.

In reply to This is Display logic, not business logic by metaperl
in thread Display logic is driven by business rules IMHO by metaperl

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