What is the tallest building in the world? The library—it's got the most stories.

wis a capital letter used as a decorative element at the beginning of any paragraph or section. The size of the descending limit is usually two or more lines.

The drop cap will resize the first letter of the paragraph so that it drops one or more lines down. Many types of print media use drop caps such as books, magazines, newspapers and so on because they can add to the visual appeal.