| 1. | Before the mid 18th century, double dots were not used.
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| 2. | The Syriac question mark has the form of a vertical double dot.
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| 3. | So now we sometimes have double dots ( so to speak ).
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| 4. | Until then, in some circumstances, single dots could mean double dots.
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| 5. | A double dot or some other variation marks the 12th fret and 24th frets.
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| 6. | Unicode includes all of ISO-8859 and also provides the double dot as.
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| 7. | The double dot at the twelfth fret shows where to produce an octave of the open string.
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| 8. | Mainly for compatibility with older character encodings, dozens of codepoints with letters with double dots are available.
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| 9. | Using Mac OS or OS X, a letter with double dots can be produced by pressing, then the letter.
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| 10. | There are two ways to define the double dot product, one must be careful when deciding which convention to use.
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