Question: what is this area of a letterform called

title: Letterform
text: The history of letterforms is discussed in fields of study relating to materials used in writing . Epigraphy includes the study of letterforms carved in stone or other permanent materials . Paleography is the study of writing in ancient and medieval manuscripts . Calligraphy treats the letterforms of decorative writing , usually in ink . Typography includes the arrangement of letterforms designed for metal print or computer . More broadly letterforms may be discussed wherever letters appear stylistically -- in graffiti for example .