First Alert ACTION T-1000 - Manual (Page 43)

Quality and Fonts
The most fundamental changes you can make to printing are in the print
quality and NLQ fonts.
The printer has two levels of print quality: draft and NLQ (Near Letter
Quality). Draft printing is fast, making it ideal for drafts and other
preliminary work. NLQ printing takes a little longer, but it produces
more fully-formed characters for presentation-quality documents.
The printout below shows the differences between draft, NLQ Roman,
and NLQ Sans Serif so that you can compare the different styles and
densities:
D r a f t p r i n t i n g i s e x t r e m e l y f a s t .
NLQ
Roman is clear and typewriter-like.
N L Q S a n s S e r i f i s c r i s p a n d d i s t i n c t i v e .
The buttons on the control panel give you an easy way of changing the
print quality and NLQ font, but if you prefer to print in NLQ Roman
most of the time, you can select it with a DIP switch (see Chapter 5). You
can also choose the print quality and NLQ font with software
commands.
3-2 Printer Features