It's called "kerning" and it's actually the proper way to print text professionally. "Kerning" is the space between two consecutive letters. Certain letters, such as "f", which has an overhang, should be placed closer to the shorter letters such as "a" and "i". Also, rounded letters such as "o" and "e" should be placed closer together than letters with straight sides, such as "i" and "r". Kerning actually is also a feature of TextEdit.
Nothing like having a background in calligraphy. 😀