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You can use many different symbols and special characters. However, they must always be communicated in regular text as well. This must be done so the screen readers will read the symbol properly to the reader. Here is a list of 15 17 symbols and special characters that are good to use.
The AT Symbol
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The Ampersand
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Slash
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Copyright
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Registered
Trademark
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Paragraph
US Dollar
Euro
British Pound
Japanese Yen
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Percent
Bullet
Degrees
One Half
One Fourth
Three Fourths
Section 1.8: Creating Symbols
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