Round brackets ( ) are used to insert additional information.|
Round brackets can also be used to show that something could be singular or plural, e.g., Remove the pin(s) from the leg.
When round brackets are used to insert information at the end of a sentence, the end punctuation of the sentence is placed outside the bracket. For example:
Round Brackets for Additional InformationRound brackets are used to insert additional information in text. If you were to remove the brackets and the information inside, the text would still work. For example:
Set in the 17th century, The Three Musketeers ("Les Trois Mousquetaires" in French) is a novel by Alexandre Dumas.
Although they are relatively common off Australia, California, South Africa and Mexico, great white sharks usually inhabit coastal waters where the water temperature ranges 12-24 degrees Celsius. They generally hunt by detecting the electrical fields (They can detect less than one billionth of a volt.) emitted by the movements of their prey.
Round Brackets to Denote Singular or PluralFor brevity, round brackets can be used to show that a word could be either singular or plural. For example:
Square Brackets to Make the Text ClearerSquare brackets are used to add information that explains the text it follows. (The information is usually added by someone other than the original author.) For example:
Square Brackets to Modify the Original TextOften, square brackets are used to replace text in a quote to make the quote clearer for the reader. For example:
Square Brackets: [sic]The term "[sic]" is used to show that the word it follows featured in the original text. Often, "[sic]" is used to indicate that a grammar error in the text was written by the original author. For example:
Square Brackets: [...]Ellipsis is used to show text omitted from a quote. Ellipsis is usually written "..." or "[...]". For example:
DON'T OVERUSE ROUND BRACKETS
Using lots of brackets in your writing is usually a sign of bad sentence structure. Brackets also look a little informal in business correspondence. Luckily, the latter issue is easily solved. You do not have to use brackets all the time. You have a choice between round brackets, commas, and dashes. These are all types of parenthetical punctuation. The information between a pairing of parenthetical punctuation is called a parenthesis.
HOW LONG CAN PARENTHESIS BE?
Parenthesis is used to add additional information. Often, it is just a few words, but it can be a complete sentence or even a few sentences. (If it's any longer than that, you should probably reconsider whether it's appropriate as a parenthesis.)
FULL STOPS / PERIODS INSIDE OR OUTSIDE THE BRACKETS
In most cases, the full stop (period ) will be outside the brackets, but if your parenthesis is a complete sentence, it should start with a capital letter and end in a full stop / period, which would be inside the brackets.
If the parenthesis is a complete sentence within another sentence, you can omit the full stop / period for style reasons. This is why there is no full stop / period after the word volt in the second example about sharks. Here's another example: