The location of Right-to-left override on Kali linux

I am doing Zaid’s course called “Learn Ethical Hacking From Scratch”. In Chapter 17 section titled “Spoofing .exe Extension To Any Extension (jpg, pdf …etc)”. He goes to all Apps on Kali and search for Character app and in there he searches the Right-to-left override feature. I am afraid that this app RTLO doesn’t exist in Character app or it is replaced. I need to do the Right-to-left feature to do the task but I can’t find it on Kali Linux.