Default Rule
When placing data using multiple Formatting Rules (by
combining them in a Rule Set, see section 3. Rule Sets),
it could be that the fields of a record meet the criteria for
more than one Formatting Rule (see section 2.1.3 Criteria).
Selecting the Default Rule check box for a Formatting
Rule forces Smart Catalog to apply that rule when such
a situation occurs.
When the Rule Set contains multiple Formatting
Rules that each have the Default Rule check box
selected, the first Formatting Rule in the Rule Set with that
option set will be applied.