Superscripts and Subscripts is a Unicode block containing superscript and subscript numerals, mathematical operators, and letters used in mathematics and phonetics. Other superscript letters can be found in the [BLOCK:spacing-modifier-letters Spacing Modifier Letters], [BLOCK:phonetic-extensions Phonetic Extensions] and [BLOCK:phonetic-extensions-supplement Phonetic Extensions Supplement] blocks, while the superscript 1, 2, and 3, inherited from ISO 8859-1, were included in the [BLOCK:latin-1-supplement Latin-1 Supplement] block.