What is an au3 file and how do I open an au3 file?
AU3 is an automated script file created with AutoIt v3, a freeware scripting program that uses a programming language similar to BASIC. It is designed for automating commands within Windows and for other general scripting purposes. AutoIt can simulate keystrokes, mouse movement, and manipulate windows, which can automate tasks that are not possible with VBScript or SendKeys.
Relevant au3 file links:How to open au3 file on Youtube
How to open au3 file on Wikipedia
How to open au3 file on Microsoft.com