Um...how long is an ellipsis again?

Factual Questions
1

From the brief poking around I’ve done on the Internet, it seems that an ellipsis is always given as a series of three dots*, like so:

…

But I seem to recall being taught in my youth that if you were going to end a sentence in an ellipsis, it should be with four dots instead of three, like so…

So, is this just my imagination, or does this memory have some basis in reality?
*I realize that an ellipsis can be a different mark altogether, but I want to focus on the one using periods for the purpose of my questions.

2

The ellipsis itself is three points, yes. The fourth dot used in ending a sentence with an ellipsis is the period. (Technically the first dot is the period, but you get the idea.) Reference: Chicago Manual of Style, 15th ed., para. 11.57.

There are other styles of ellipsis, but this is the one you’re asking about.

3

It’s ALT+0133 long.

…

4

Well, the famous one in Washington, D.C. appears to be about 960 feet. . . oh. . .wait. . . .
nevermind

5

Thank you, Scarlett, for the helpful info.

I have nothing to say to the rest of you. :slight_smile: