Last seen in:
- The Times - Concise - Times Concise No 8454
- The Sun - Two Speed - May 9 2019
- The Times - Concise - Times Concise No 7891
- The Telegraph - QUICK CROSSWORD NO: 27,005 - Oct 24 2012
- Irish Times (Simplex) - Sep 26 2011
- Newsday.com - Sep 10 2008
- Irish Times (Simplex) - May 15 2008
- The Telegraph - QUICK CROSSWORD NO: 25,003 - May 27 2006
Related Clues:
- System of signals
- Put (a message) into code
- Secret system of letters. words etc
- Cipher — set of principles
- Rule book
- Render unreadable, in a way
- Building inspector's expertise
- Put in a secret language
- Make unreadable to the enemy
- Cryptologist's interest
- Writer returns with plea before tea to put message into code
- Be a computer programmer
- Internet expert Lawrence Lessig's subject
- Secret payment at door for ecstasy
- Send a secret message to writer embracing fighting man with oriental