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User-Defined Characters
Superscripts and subscripts
You can also create superscript and subscript user-defined
characters. Just as Letter Quality characters are defined when the
Letter Quality mode is selected, super/subscript characters are
created when either superscript or subscript is selected.
These super/subscript characters can be used either as superscripts
or as subscripts. The characters are exactly the same; it is only their
placement that differs. The difference between super/subscript
characters and regular characters is that they are smaller. They are a
maximum of 16 dots high and their width in dot columns is shown
in the table below:
Draft
Letter Quality
dl
d0 +
dl
+ d2
(maximum)
(maximum)
7
12
23
36
Proportional
I
23
I
42
I
Since super/subscript characters are smaller, they don’t require as
much information when you define them. When you define
super/subscript characters, you need only two bytes of data for
each vertical row of dots. Design grids for these characters are
shown in the figure below.
Draft pica
Letter Quality
and Proportional
4-29