Verb
overpunch (third-person singular simple present overpunches, present participle overpunching, simple past and past participle overpunched)
(transitive, computing) To punch (some value or pattern) over an existing pattern on paper tape.
Most implementations also provide unsigned BCD values with a sign nibble of 1111 (F). citation citation citation ILE RPG uses 1111 (F) for positive and 1101 (D) for negative. citation These match the EBCDIC zone for digits without a sign overpunch. Source: Internet
This convention comes from the zone field for EBCDIC characters and the signed overpunch representation. Source: Internet