Answer: superscribe

AnswerCrossword Clue
superscribeWrite or print (an inscription) at the top of or on the outside of a document
superscribeto write at the top or at the head
superscribeWrite or print an inscription at the top of or on the outside of (a document)
superscribeWrite or print (a letter, word, symbol, or line of writing or printing) above an existing letter, word, or line