• Guide to Punctuation
• Introduction
• Why Learn to Punctuate?
• The Full Stop, the Question Mark and the Exclamation Mark
• The Comma
• The Colon and the Semicolon
• The Apostrophe
• The Hyphen and the Dash
• Capital Letters and Abbreviations
• Quotations
• Miscellaneous
• • Italics
  • Boldface
  • Small Capitals
  • Parentheses
  • Square Brackets
  • The Ellipsis
  • The Slash
  • Numerals, Fractions and Dates
  • Diacritics
  • The Other Marks on Your Keyboard
  • Priority Among Punctuation Marks
• Punctuating Essays and Letters
• Bibliography

Square Brackets

There is only one common use for square brackets ([ ]). Square brackets are used to set off an interruption within a direct quotation.

Very occasionally square brackets are used for citing references.

Specialist fields like mathematics and linguistics use square brackets for certain purposes of their own, but these are beyond the scope of this document.

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