A chunk's target ceiling. Defaults to 1,800 characters.
OptionaloverlapChars
overlapChars?:number
How much of a chunk's end is repeated at the start of the next one on the
same page, so a sentence that straddles the cut is whole in one of them.
Defaults to 200 characters. Never carried across a heading or a page.
A chunk's target ceiling. Defaults to 1,800 characters.