I'm very new to character encoding, I never really stopped to analyze how it works. My question is as follows, I have a text editor, for example the windows notepad, when I write a file in ascii encoding in which there is in this file a non-ascii character, such as ®, how is it possible for me to visualize this character, without breaking anything, if the file is encoded in ASCII ? Or simply those editors that use ASCII, actually use Extended ASCII?