Flag semaphore
From Just Solve the File Format Problem
Revision as of 23:56, 20 June 2014 by Dan Tobias (Talk | contribs)
Flag semaphore is one of the methods of encoding characters that preceded the computer age, along with Morse code and braille. It consists of signals sent by holding flags in particular positions, to be read by observing the flags from a distance (e.g., with binoculars).
