The generation of symbols follows the process of starting from elements, going through the definition of rules, and finally being given meaning by people. I use three posters superimposed to illustrate the entire process of symbol formation (Figure 1-3). As a rule, Figure 2 selects the identifiable numbers 1 to 6 in the original elements to imply the reading order of the information in Figure 3. Figure 4 shows the complete poster after summarizing the information in the previous three figures, Morse Code The interpretation of the poster adds interest to the poster, and at the same time shows the hidden characteristics of the sign.

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