Leading – What is Leading?
Leading is the key to readability; Leading is the space between the lines of type in a body of copy. When used correctly leading helps the reader to follow the type easily and overall improves the look of a block of text. There are many factors that affect leading such as: typeface, measure, case, type size etc. An useful rule is to set leading 2-5pt larger than the type size, depending on which typeface you’re using.
Here’s an example: