Sentence Break - OLetter
OLetter is a character classification that designates letters, including alphabetic scripts, syllabaries, and ideographs, which serve as the core building blocks of words and sentences. In text segmentation, OLetter characters act as the primary content of a sentence, meaning that a sentence can start or end with them, but they are typically grouped with adjacent OLetter characters to form a single textual unit. These characters are distinguished from punctuation, numbers, and other symbols, and they play a key role in determining where sentence boundaries fall, as a sequence of OLetter characters usually constitutes a clause or phrase that is not split internally. However, OLetter characters can be separated by spaces or other break opportunities, yet they remain the fundamental units that carry lexical meaning, and their presence or absence influences how algorithms identify the start and end of a sentence.