What is dot on an i?

A dot on an "i" is a small, circular mark used in written language to distinguish the lowercase letter "i" from similar-looking letters such as "l" and "j". It is also used as a grammatical marker in certain languages to indicate the end of a sentence or as a decorative element in typography. The origin of the dot on the "i" dates back to the Middle Ages when scribes added it to distinguish the letter from others in handwritten manuscripts. Today, it is considered a crucial element of written communication and is included in virtually every font and writing style.