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#morse code #international morse code #blinking #eyes #sos #communication #communicate #unicode #morse #code #telecommunication #amateur radio #coded #transmitted #signaler #telegrapher #distress signal #intercommunication #intercommunicate #communicating #samuel finley breese morse #samuel f. b. morse #samuel morse #jeremiah denton #jeremiah andrew denton jr. #transmission #nonverbal communication #message #💞 #!! #❗️ #❕️ #⚠️ #blink #eye blink #mayday #trela #emergency service #emergency #help me #help #distress #alerting #alarm #body language #assistive technology

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#warning signal #notify #signaler #señales

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#flag semaphore #signaler #visual communication #flag waving #optical communication