Epson C117001-N - DFX 5000+ B/W Dot-matrix Printer, Руководство пользователя

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Italic printing
You can use italic characters for special emphasis or as an
alternative typeface. Some software programs let you select italics
for the entire document, but with software commands you can
select italics for a single word or phrase.
Here is an example of italic printing:
This is NLQ printing.
This is italicized NLQ printing.
Note: The printer command ESC 4 turns on the italic mode
even if the current DIP switch setting is set to the Epson
Extended Graphics character table instead of the italics
character table. (See page 3-13 for more information on which
character table to use.)
Underlining
The underline mode automatically underlines any piece of text. It
underlines spaces, subscripts, and superscripts. (You can’t
underline horizontal tabs, however.) Underlining is the only
printing enhancement that can be combined with high-speed draft
without reducing the printing speed. Although you can usually
select underlining using your software program, you can also
select it with a software command.
Superscripts and subscripts
Superscripts and subscripts can be used for printing footnote
numbers and mathematical formulas. The following example
combines underlining and subscripts in a mathematical formula.
a v e r a g e = ( a
1
+ a
2
+ - - - - - + a
n
)
n