BONUS CONTENT Extended characters used in major European languages grouped by language and by the Latin letter they are based on. This content is associated with Chapter 3 of the book.
| Character | Languages | |
| ć Ć | hr Croatian, pl Polish, sr Serbian, wen Sorbian | |
| ċ Ċ | mt Maltese | |
| ĉ Ĉ | eo Esperanto | |
| č Č | cs Czech, hr Croatian, lt Lithuanian, lv Latvian, sk Slovak, sl Slovenian, sr Serbian, wen Sorbian | |
| ç Ç | ca Catalan, fr French, pt Portuguese, sq Albanian, tr Turkish | |