To select the direction in which characters, raster graphics ands fill patterns
are printed, use the following command:
<ESC>&a n P
in which for n you put 0 to select the portrait direction,
90 to select the landscape direction,
180 to select the upside-down portrait direction,
and 270 to select the upside-down landscape direc-
tion.
Symbol sets: a review
Each font can have many symbol sets, each being a subset of all the possible
characters of the font. These subgroups include different symbols for
different nations or for lawyers or artists or mathematicians. Any two symbol
sets, moreover, may store the same symbol at a different font position in the
printer’s memory.
The default LaserJet III emulation symbol set is Roman-8, which includes all
ASCII characters plus dozens of accented letters. But you can use any of the
sets shown below. Technically you can pair any symbol set with any internal,
cartridge or downloaded font; however it doesn’t make much sense to print
text with a math or line-drawing symbol set.
LaserJet III mode provides two different symbol set commands. You put a
code into one command to select aparticular symbol set for your primary or
secondary font. You use the other command to select the current or default
symbol set for your primary or secondary font.
Selectin’g a symbol set
This first symbol set command lets you select a particular symbol set for the
current font. To select a symbol set for your primary font, send this
command:
<ESC> ( n
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