S: (n) window (the time period that is considered best for starting or finishing something) "the expanded window will give us time to catch the thieves"; "they had a window of less than an hour when an attack would have succeeded"
S: (n) code, computer code ((computer science) the symbolic arrangement of data or instructions in a computer program or the set of such instructions)
S: (n) coding system (a system of signals used to represent letters or numbers in transmitting messages)
S: (n) writing (letters or symbols that are written or imprinted on a surface to represent the sounds or words of a language) "he turned the paper over so the writing wouldn't show"; "the doctor's writing was illegible"