CODE

Established standards (4)

Solution has appeared in 6 crosswords (3 across and 3 down):

• Quick crossword No 16,485 — 2023-03-08 00:00:10
  1D: System for sending secret messages (4)
• Quick crossword No 16,206 — 2022-04-15 23:00:43
  3D: Set of rules, principles or laws (4)
• Quick crossword No 16,063 — 2021-10-29 23:00:42
  16A: Set of conventions (4)
• Quick crossword No 15,772 — 2020-11-24 00:00:05
  9A: Secret language (4)
• Quick crossword No 15,425 — 2019-10-14 23:00:37
  18D: Set of rules (4)
• Quick crossword No 15,225 — 2019-02-23 00:00:39
  22A: Established standards (4)