TextRange

A part of a TextStory’s content, from its start to its end, whose style is that of its letters and paragraphs: read, a property is the one they share, or undefined; set, it changes them. It has the same style properties as items, e.g. text.words[0].fontSize = 24. A range is a snapshot of two indices: changing styles never moves it, but changing the content leaves ranges taken before out of date, as indices into any string.