Related Clues:
- Written code
- Message written in a secret code
- Do programming work
- Zip --
- Program listing?
- Write software
- Software basis
- Bar closing?
- Encryption or set of rules
- Cryptogram or set of standards
- Computer instructions
- Person or thing of no importance, or the symbol 0
- Method of encryption or set of rules
- Symbol representing nought, thing of no importance
- Specially devised system of words, as by Morse