Supplemental Punctuation is a Unicode block containing historic and specialized punctuation characters, including biblical editorial symbols, ancient Greek punctuation, and German dictionary marks. Additional punctuation characters are in the General Punctuation block and sprinkled in dozens of other Unicode blocks.

If the supplement begins or ends the sentence, it only requires one punctuation mark (between the supplement and the rest of the sentence). If the supplement comes in the middle of the sentence, it requires punctuation on both sides.

The Supplemental Punctuation Unicode block is a range of code points in the Unicode standard that represents a variety of punctuation marks that are used in various languages and writing systems.