This tab lets you create where clauses in a script editor. A where clause specifies a script that complements the SQL code generation to restrict the rows of a table to replicate. For example, you can replicate only the data of table SALES, which amount is > 1000 $.
You can use the Auto Completion List tool or press ctrl and space bar to display a contextual help for typing the clause. Click inside the clause text to close the list.