What Does Non-Printable Characters Mean?
Non-printable characters are parts of a character set that do not represent a written symbol or part of the text within a document or code, but rather are there in the context of signal and control in character encoding. They are used to tell word processors and certain applications, like Web browsers, how a document is supposed to look.
Techopedia Explains Non-Printable Characters
Non-printable characters are used to indicate certain formatting actions, such as:
