To make special characters and accented letters show up on your pages, use a special set of codes called character entities, which you insert into your HTML code and which your browser will display as the corresponding symbols or characters you want.
The most common character entities have been collected by the International Organization for Standardization and compiled in the ISO Latin Alphabet No. 1 table, which includes special characters, letters with diacritical marks (accents, umlauts, etc.), and scientific and currency symbols. The Latin-1 table contains 255 characters.
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