Review Article
A Comparative Analysis of Information Hiding Techniques for Copyright Protection of Text Documents
Table 2
Unicode zero-width control characters [
11,
32,
33].
| Unicode Hex code | HTML code | Name | Text written symbol |
| U+200B | ​ | Zero-width space | No symbol and width | U+200C | ‌ | Zero-width nonjoiner | No symbol and width | U+200D | ‍ | Zero-width joiner | No symbol and width | U+200E | ‎ | Left-to-right mark | No symbol and width | U+202D | ‭ | Left-to-right override | No symbol and width | U+202E | ‮ | Right-to-left override | No symbol and width | U+202A | ‪ | Left-to-right embedding | No symbol and width | U+202B | ‫ | Right-to-left embedding | No symbol and width | U+202C | ‬ | Pop-directional formatting | No symbol and width | U+180E | ᠎ | Mongolian-vowel separator | No symbol and width |
|
|