Encrypted writing (4)
I believe the answer is:
code
(Other definitions for code that I've seen before include "Post -; dialling -" , "Secret symbols" , "Method of secret communication" , "regulations" , "See 21 Across" .)
I believe the answer is:
code
(Other definitions for code that I've seen before include "Post -; dialling -" , "Secret symbols" , "Method of secret communication" , "regulations" , "See 21 Across" .)