Tardis:Period

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(Redirected from T:PERIOD)
Periods or full stops are generally well understood by most editors, worldwide. However, periods aren't used after Mr, Mrs, or St, nor are they used with acronyms like UNIT, NASA, and CIA. And they are only sometimes used when a quotation ends a sentence.

Periods are naturally used at the end of sentences to bring closure. However, because of varied use across the English speaking world, the use of periods with abbreviations must be arbitrarily decided her on our wiki.

In keeping with our general preference for British English usage, the following is "correct" here:

  • As mentioned at T:HONOUR, no period shall be used if the first and last letters of a personal title are used to form the abbreviation of that title. A period shall be used if the usual abbreviation does not include these letters. Hence, it's Mr Smith but Rev. Arnold Golightly.
    • without a period: Mr, Mrs, Mx, Ms, St
    • with a period: Rev., Sen., Rep., Prof.
  • In the use of acronyms, no period shall be used, owing to the modern British standard which has essentially caved into American usage. Yes, UNIT was once U.N.I.T., but nowadays it's not. Hence NASA, CIA, FBI, etc.

You should put no more than two spaces after a period, as is explained elsewhere.

Periods and quotation marks

One of the more problematic cases with periods is how they're used with respect to quotation marks. What matters here is whether you're quoting a whole sentence or just a phrase.

When quoting a full sentence, the ending punctuation of the quotation overrides the need for the overall sentence to have a period.

Good Bad
The Doctor said, "Everyone run!" The Doctor said, "Everyone run!".
The Doctor said, "Everyone run"!

If quoting a fragment that ends a sentence, the period always goes outside of the final quotation mark.

Good Bad
The Doctor claimed the sonic screwdriver "didn't work on wood". The Doctor claimed the sonic screwdriver "didn't work on wood."

Periods precede decimals

Separate integers from fractional values with periods, not commas. Prices, for instance, should be written as $100.07, not $100,07.