Alphanumeric characters include both upper and lower case letters (A to Z, a to z) and numerals (0 to 9). Beyond these, special characters — such as punctuation marks and symbols — add further depth ...

Your Mac’s keyboard makes it easy to type any of the standard characters—the ones used most frequently in everyday typing. But OS X lets you use hundreds of special characters that don’t appear on ...

Long-time Mac users know that you can type diacritical characters—for example, â, é, ì, ü, and ñ—by first typing the diacritical (which usually requires the use of the Option key) and then typing the ...