How to create a simple dialog box with one or more buttons to either present a series of options or a warning message to the user.
How to create a dialog box with a text field and one or more buttons so that the user can enter text for your script.
How to prompt the user to browse for a file on disk with a file browser dialog box appropriate for your operating system.
How to use the
error commands to provide feedback to the user that will be logged in the Script Editor.
What regular expressions are.
How regular expressions work.
How regular expressions can be used to validate integers, floating-point numbers, and object names that a user has typed into a text field.