Capital Letters are the larger letters used at the beginning of sentences and names. They are the letters made on a typewriter when the "Shift" key is pressed.
To capitalize a word means "to make the first letter of the word a capital letter." See the Capitalization Rules topic in the Grammar Contents for more on when to capitalize.
Capital letters are sometimes called Upper Case letters.
For a list of the capital letters, see the letters in the Glossary Index Box.