What is used in pairs to enclose a correction?

You would use brackets [like this] to enclose a correction. For example, if an author of a story about a shipwreck had a quote you want to use, but the quote is unclear without adding the topic, use brackets:"When Thomas jumped [from his listing ship], he figured he had a better chance in the open seas rather than waiting for the ship to wreck on the rocks."

If an author misspelled a Word, put the correction in brackets:

A parde [parade] is a festive procession through public streets.

Note: Even though most authors strive for perfect text, errors can occur at any point before publishing. When quoting text that contains an error, we should use brackets to show the correction.