Complex sentence: However, the individual scripts often have their own punctuation and diacritics, so that many scripts include not only letters, but also diacritic and other marks, punctuation, numerals and even their own idiosyncratic symbols and space characters.
Split into simpler sentences: However, the individual scripts often have their own punctuation and diacritics. So many scripts include not only letters, but also diacritic and other marks, punctuation, numerals and even their own idiosyncratic symbols and space characters.