Handle Quotes in Tokens makes it possible to work with tokens, such as @Request tokens, that contain single quotes in their values. When set to True, any tokens in the Source attribute will have single quotes "doubled" so that they work within the SQL statement.
For example, imagine a SQL statement in a Source attribute like "SELECT * FROM Customers WHERE CompanyName LIKE '@Request.Name~%' ". Then, if the Name we are searching for is "Trail's Head", the SQL executed becomes "SELECT * FROM Customers WHERE CompanyName LIKE 'Trail''s Head%' ".
The default for Handle Quotes in Tokens is False.