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those symbols were used to hide messages so instead of using letters from the alphabet they used those symbols.

Explanation:

Using symbols to write is different than using an alphabet because with symbols sometimes, they will appear as though they tell a story. Other times the pictures used to write, like in Hieroglyphics, are symbolic of things that can help explain what they are trying to say.

Hope this helps!!

if you are talking about current time the answer is no

if you are talking about when the colonies were developing the answer is yes