Triggers are PL/SQL
program units that "fire" at
specific times during report
execution.
One common use of triggers
is to govern conditional
formatting. For example, you
can use a format trigger to
cause a value to display a
certain way under certain
conditions.
Suppose you want to create a
format trigger that changes
the color and font of the data
in the SALES field if the value
is over a certain amount.
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