Useful Information
The LaserJet family printers allow you
to
print in either portrait
(vertical)
or
landscape (horizontal) orientation. Formatting
is
based
on
the
mode selected (default
is
portrait mode)
and
the
page size selected (either
the
default size as contained in the input
paper cassette
or
the size selected using the
Ec&I#P
sequence).
The printer strips unuseable escape sequences
and
control codes
from
the data
that
is
sent
to
the printer. Therefore,
if
you send a
sequence
that
is
not
supported
or
recognized (because
of
a syntax
error,
for
example),
the
printer will ignore it and no error will be
reported.
All
of
the features selected using escape sequences are active until
specifically deactivated using another escape sequence (or when
power-up
or
reset occurs).
For
example,
if
automatic underlining
is
activated using
the
Ec&dD
sequence, all following characters
will be underlined until you send an
Ec&d@
(disable
auto-underlining).
Many
of
the
escape sequences contain the lower case letter L (I)
and the
number
one
(l)--or the upper case letter 0
(0)
and the
number zero (8). Since the subtle differences between the
characters can be confusing, take a minute
to
compare the
characters so
that
you
can
avoid later confusion (on some
terminals, they may even look the
same-
if your escape sequence
isn't working properly, this could be
the
problem):
Lower case L - I
Upper
case 0 - 0
Number
one
- 1 Number zero
--
8
If
the value field (#) in any
of
the escape sequences
is
not
specified,
the
default will be a zero
in
the value field.
For
example,
the
sequences
Ec&a8L
and
Ec&aL
are equivalent.
1-9