The Function lookup is used to select a function(s).
Select a function(s):
The functions(s) are listed in ascending order.
To search for a specific function, begin typing the function or description name in the Search field. The list is automatically filtered to display the function(s) that contain the numbers or characters you have typed.
When you locate the function you want to retrieve, select the corresponding checkbox and click OK. The lookup closes, and the field/parameter is populated with the selected function(s).
Click Cancel to close the lookup without selecting a function.