Check this option if the generated code is to include an option that allows the end-user to clear the instance list.
By allowing end-users to selectively clear the instance lists (and by providing an array of different filters) the end-user can build instance lists that match quite complex business criteria.
E.g.: A list of all employees who work in the ADM or MKT departments, and all employees who started work in the first 3 months of this year, is easy using 2 very simple employee filters.
This is a Program Coding Assistant property.