Functions
The Functions list all the predefined functions we have written that can be used in any script, this is additional to all the standard functions that come with Javascript Expression Language.
Use
The Use button adds the function prototype to the script, if the functions takes parameters the script needs to be modified to pass the correct arguments.
Edit
The Edit button allows us to edit the function currently selected in the dropdown list
Add
The Add button allows us to add a new function
Clone
The Clone button allows us to make a copy of the function currently selected in the dropdown list that we can then edit further to create a new fucntion.
Delete
The Delete button allows us to edit the function currenlty selected in the dropdown list