Using punctuation effectively means that your reader can make sense of your writing. It can also help create dramatic effects in your writing.
Part of English LanguageSpelling, punctuation and grammar
These are used to add extra information:
Charles (never Charlie or Chad) was a serious young man.
Sandy鈥檚 pet dog (she detested cats) was fifteen years old.
If you are using brackets towards the end of a sentence, the full stop to complete the sentence goes outside of the brackets:
Neharika wore the blue shoes (her sister, Amrita, had already chosen the red ones).