Specials is a short Unicode block of characters allocated at the very end of the Basic Multilingual Plane, at U+FFF0–FFFF, containing these code points:
- U+FFF9 INTERLINEAR ANNOTATION ANCHOR, marks start of annotated text
- U+FFFA INTERLINEAR ANNOTATION SEPARATOR, marks start of annotating character(s)
- U+FFFB INTERLINEAR ANNOTATION TERMINATOR, marks end of annotation block
- U+FFFC  OBJECT REPLACEMENT CHARACTER, placeholder in the text for another unspecified object, for example in a compound document.
- U+FFFD � REPLACEMENT CHARACTER used to replace an unknown, unrecognised, or unrepresentable character
- U+FFFE <noncharacter-FFFE> not a character.
- U+FFFF <noncharacter-FFFF> not a character.