Yes, ideally the labels would be strings in the style of C source code. That includes using \0 to put NUL bytes in the middle. It also includes wide character s

Yes, ideally the labels would be strings in the style of C source code. That includes using \0 to put NUL bytes in the middle. It also includes wide character strings. This allows for unusual languages like LISP and FORTH, without mangling the symbols. Symbols could have commas and spaces.