They are used to enable people to communicate. After all, you are reading this answer in the form of 26 symbols (plus a few for punctuation). The only significance for the letter "c" is that which is accorded it by the common convention that both of us use.
In a different context, and with a different audience, the same letter could have meant:
Moreover, if I had written in code the same symbol could have meant something quite different.
Zeus's symbols were used for something to be used for
Chemical symbols are used to represent elements.
Click on the 'Copyreading Symbols' link below to see the symbols used in copyreading.
The symbols that were used in A Walk in the Woods were bears.
Symbols are used to shorten the names of the elements.
Commonly used P&ID symbols (Piping and Instrumentation Diagram symbols) for manual valves.
Conventional Symbols are symbols that are used on maps to represent different features.
Conventional Symbols are symbols that are used on maps to represent different features.
Hazard symbols are not used in risk assessments. They are used in hazard communication.
they are used for law
conventional symbols are those symbols which are commonly used all over the world.
There are 16 symbols.