This figure shows the Functions navigation tab in Rules Designer. It contains three areas: Functions, Arguments, and Body.

The functions area contains a table with columns: Name, Return Type, Bucketset, and Description. There is one row for each defined function. There is one row with Name value Function_1, and all other columns are blank. This row is selected. Information for the selected function appears in the Arguments and Body area. The Functions area includes the following icons: Test, Refresh, Create, and Delete.

The Arguments area contains a table with columns: Name, Type, and Bucketset. There are two rows. Row 1 contains Name value arg_1, Type value String, and Bucketset value blank. Row 2 contains Name value arg_2, Type value String, and Bucketset value blank. The Arguments area includes the following icons: Add, Delete, Move Up, and Move Down.

The Body area includes the body of the function. For this function, this includes the text, call print(message:arg_1).