THPDFUnicodeLineBreakKind
THPDFUnicodeLineBreakKind = (ulbkProhibited, ulbkAllowed, ulbkMandatory);
ulbkProhibited keeps neighbouring text on the same line, ulbkAllowed provides an optional fitting point and ulbkMandatory terminates the current line
Emergency grapheme wrapping is a higher-level fitting choice and does not change the default opportunity reported by this enum