secret text

end of text

formatted message text

plain text

structured message text

text format

innocuous text message

free form message text

clear text

clear-text radio traffic

cipher text

special text

Warning text that appears when the battery voltage falls below warning threshold

secret (security classification)

secret

secret agent intelligence

Secret Intelligence Service (SIS) / Military Intelligence, Section 6 (MI6)

secret internet protocol router network (SIPRNET)

secret service

top secret (security classification)

top secret

state secret

be drawn from secret intelligence

be marked top secret

foreign secret agent

give away the secret by careless talk

clear secret

clearance for top secret work

secret clearance

secret defense service

secret language

secret post

secret qualification clearance