Using an OR Statement in Crystal Reports to suppress rows in the Details section

I recently created a report where I want to suppress rows in the Details section of a Crystal Report. Using an OR statement along with a conditional IF, besides suppressing based on duplicate ID values, I can also suppress the row based upon a parameter value.

{?Intended Audience} = "Internal Use Only"
OR
 if (not onfirstrecord) then (previous({PERSON.ID})={PERSON.ID})