Definition: The term "subpostscript" is used in the field of typography to refer to a typeface that has been modified or altered by adding an extra line before, after, or within a letter. This modification can be done through a process known as "subprinting" or "subsetting." Subpostscripts are often used for creating a more stylish and professional look, especially when they are combined with other types of typography such as sans-serif fonts or sans-italic fonts.