when do you use four periods in an ellipsis
Ellipsis Whether an ellipsis at the end of a sentence needs a fourth dot to finish the sentence is a matter of debate; Chicago advises it,[4] as does the Publication Manual of the American Psychological Association (APA style),[5], while some other style guides do not;[citation needed] the Merriam-Webster Dictionary and related works treat this style as optional, saying that it "may" be used.[6] More commonly, a normal full stop (period) terminates the sentence, then a separate three-dot ellipsis is used to indicate one or more subsequent elided sentences before continuing a longer quotation. Business Insider magazine suggests this style,[7] and it is also used in many academic journals. Even the Associated Press Stylebook[8] – notably hostile to punctuation that journalists may consider optional and removable to save newsprint column width – favors this approach. It is consistent in intent if not exact form with the agreement among those in favor of a fused four-dot ellipsis that the first of them is a full stop terminating the sentence and the other three are the ellipsis.
Sentence spacing The desired or correct sentence spacing is often debated but many sources now say additional space is not necessary or desirable.[9] From around 1950, single sentence spacing became standard in books, magazines and newspapers,[10] and the majority of style guides that use a Latin-derived alphabet as a language base now prescribe or recommend the use of a single space after the concluding punctuation of a sentence.[11] However, some sources still state that additional spacing is correct or acceptable. The debate continues.[3] Many people prefer double sentence spacing for informal use because that was how they were taught to type.[12] There is a debate on which convention is more readable; the few recent direct studies conducted since 2002 have produced inconclusive results.[13]