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I am sure that this wouldn't have much meaning, but still want to get acknowledged whether usage of double dots is formal.

I have observed people using double dots in business Emails. Usually while adding additional recipients to the thread. example:

Adding XYZ..

I would like to know the specific meaning of it.

In the world of music, placing double dots .. infront of note is a shortcut, it signifies addition of its next level note.

EDIT: Does it specify an infinite Pause? Infinite .. I mean by unsure (not never ending).

In general case, if I use this .. in my statement what would it mean?

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It would be helpful to see an expanded example of what you mean. –  Barrie England Mar 8 '12 at 8:21
    
@BarrieEngland, agreeable. Please add it as an answer. Thanks. –  InfantPro'Aravind' Mar 8 '12 at 8:42
    
I agree with Barrie, infant programmer 'Aravind', you need add an expanded example into your question so that the people trying to answer have a better idea how to help you. –  Matt Эллен Mar 8 '12 at 8:50
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@infant programmer 'Aravind': Well, I can't see how two dots can ever mean anything different to three dots - so it seems to me it's just a nonstandard way of writing the ellipsis. It looks as if you're hoping to be told it's got some specialised meaning, and that you can validly use the two- and three-dot forms within the same passage of writing, expecting others to recognise your distinction. I just don't think you can, so if your specific usage isn't covered in the original question then it should be. We don't need another separate question here just for two dots, imho. –  FumbleFingers Mar 12 '12 at 12:41
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@FumbleFingers, Understood. :) So you believe ellipsis and double-dots are same? well. Thank you. –  InfantPro'Aravind' Mar 12 '12 at 13:50

7 Answers 7

up vote 6 down vote accepted

As far as I know, double dots isn't actually an established punctuation mark (unlike the three-dot ellipsis) but you can see it a lot in informal written online communications.

I think that it comes from overuse of the ellipsis. The ellipsis is overused in emails/facebok statuses/chats because it's a rather vague and unspecific mark when people sort of ramble with their thoughts and don't frame them in well-defined sentences. I'm not saying this critically or pejoratively, just an observation on the less formally structured form of online communications.

So the double-dot, I believe, represents a grass-roots construction that's like a less-dramatic and drastic ellipsis. Shorter pauses, perhaps. Less meandering and long-winded. :)

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thank you for your valuable opinion :) –  InfantPro'Aravind' Mar 8 '12 at 8:37
    
I find you answer interesting and agreeable. I will wait for some more responses.. before declaring Best answer :) –  InfantPro'Aravind' Mar 8 '12 at 8:41

A legitimate use of dots is in a quotation from which a part is missing. This piece of punctuation is, as others have said, ellipsis and normally consists of three dots. The only place I have seen two dots is in quotations in the Oxford English Dictionary, where they are used to save space.

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I wonder if a double-dot isn't meant to be a shorthand version of the ellipsis, being informally adapted in text messages, which are limited to 160 characters. (An 3-dot ellipsis can be a rather "expensive" punctuation mark, taking up nearly 2% of the allotted characters in a message). Just wondering aloud.. –  J.R. Mar 8 '12 at 10:07
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@J.R. Possibly, but you may want to develop that into an answer. –  Barrie England Mar 8 '12 at 11:16
    
Note that the OED uses two mid··dots, not two full..stops, for their special form of ellipsis. –  tchrist Dec 2 '12 at 17:04

A double dot is also used in mathematics for integer intervals (e.g., [−1..2] denotes the set {−1, 0, 1, 2}). It is also used in several programming languages to for similar concepts.

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thank you very much! –  InfantPro'Aravind' Dec 2 '12 at 14:05

I haven't seen double dots, but an ellipsis (three dots) is quite common.

As an ellipsis is usually used in English to indicate an omission, my assumption is that this originally came about when the writer wanted to explain the addition of the extra recipients etc., and has become common through use.

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Yes. Ellipsis signifies something unknown or unsure. Double dot may be.. a pause? :) –  InfantPro'Aravind' Mar 8 '12 at 8:39

As a young copywriter, I first noticed use of the two-dot ellipsis as a space saver in Sears Roebuck's 1964 catalogs.

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Is there an example of that? –  xxx Jun 30 '13 at 8:13

An ellipsis (...) is used to denote that something is being left out of the sentence in formal writing, or someone's voice or thought that is fading in informal writing.

The two dots are used by people that don't understand that there are supposed to be three dots. They think, by leaving out one of the dots, they're being smart because it doesn't mark the end of a sentence. In reality, the three dots mean it isn't the end of the sentence, and the four dots mean it does. The three dots represent trailing off or leaving something out in the middle of a sentence. The four dots represent fading or leaving something out at the end of a sentence. That's a little confusing so I'll give you an example.

People that use two dots -

Middle of a sentence: I don't know what you want to be..for Halloween.

End of a sentence: I don't have plans...What are you doing for Halloween?

What it's supposed to look like -

Middle of a sentence: I don't know what you want to be...for Halloween.

End of a sentence: I don't have plans....What are you doing for Halloween?

Same thing would happen if you had an explanation point or question mark.

People that use two dots -

End of a sentence: I don't..have plans. What are you doing for Halloween..?

What it's supposed to look like -

End of a sentence: I don't...have plans. What are you doing for Halloween...?

The two dots don't have a real meaning, it's just used online by people that think they know what they're doing. Sorry if I sound bitter, but this is actually one of my biggest pet peeves. =D

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Ellipsis, not elipse –  Charles Oct 31 '13 at 17:58

In your example it seems to be a misuse of double dots. To my understanding, double dots is used for leaving out something from within a sentence to clarify the difference between when something is left out from within a sentence (double dots) and when something is left out that includes more than one sentence (three dots).

On the other hand, grammar is a fluid thing. Unless you are writing formally, it's fine to have quite a bit of variation.

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This answer needs substantiation in the form of reliable sources. According to this article, three dots are standard, except that the (huge) OED, which consists largely of quotations, is forced to use two dots as a space-saving device. –  MετάEd Aug 24 '13 at 16:14
    
Welcome to ELU & thanks for your contribution. Please note that answers in this site are generally expected to be substantiated by a recognised authority. Hence I have to ask, where did "your understanding" come from? This is especially so, because most of the other answers directly contradict your assertion here. –  TrevorD Aug 24 '13 at 16:16

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