How can you display the list of all available functions in the Expression Editor box?

To display the list of all available functions in the Expression Editor box, both typing "fun" into the Expression Editor box and selecting the "fx" icon from the toolbar options are valid methods.

When you type "fun" into the Expression Editor, it acts as a command that prompts the editor to display a dropdown list of functions that you can utilize in your expressions. This provides quick access to various functions without requiring you to remember each one or to look them up elsewhere.

On the other hand, clicking the "fx" icon in the toolbar opens up a similar functions menu that allows you to browse and select functions visually. This is particularly helpful for users who prefer a graphical interface over typing commands.

Both methods provide easy access to the full range of functions, making it simple for users to enhance their expressions without memorizing everything, thus improving productivity and accuracy in application design.