hH)lllotl'S
and.
mathcmatical formulas are
probably
the
most
com-
IIIDII
lise
of
superscript
and
subscripts,
but
they have other uscs
as
well,
slIch
as
packing a
lot
of
text
in a small spacc,
as
in some legal
COli
tracts, for example.
Character
Height
The
MPS
1200 has
another
feature
which
is espccially useful for
printing
signs
and
headlines: vertically enlarged printing.
To
print
thcsc characters, the
print
head makes
two
passes over thc paper,
printing the top
half
in thc first pass
and
thc
bottom
half in thc
sccond pass. This makes the character twice
as
high
as
regular
print.
Vertically
Enlarged
Print
Format
BASIC
Hex
OR
BASIC
Hex
ON
chr$(27)
"h"
1B
48
chr$(27)
chr$(126)
"11"
1B
7E
31
31
OFF
chr$(27)
"u"
1B
55
chr$(27)
chr$(126)
"10"
1B7E3130
There
are
two
escape sequences
you
can use
to
acccss vcrtically
enlarged print.
One
sequence is
ESC
h (note thc
lower
case
"h")
to
turn
it
on
and
ESC
u to
return
to
normal
height printing.
Thc
othcr
command
sequence is
ESC~l1,
which requires you to usc thc
ASCII code chr$(126) for the tilde. This
form
of
the
command
uscs
1
and
0
as
its
on
and
off
switches. Sending
ESC~11
turns
on
vertically enlarged print; sending
ESC~10
returns to
normal
hcight
printing.
10
openl,4,7
20
pt'int#i,cht'$(27)
;cht'$(126)
"11";
"Hey,
You!!"
:::;0
pt'int#i,
cht'$
(27)
"G";
cht'$
(27)
;
cht'$
(126)
"10";
"That
SLlt'e
got
YOLlt'"
40
pt'int#1,
cht'$
(27);
cht'$
(126)"
11";
"A";
cht'$
(27);
c:
1··1
t'$
(
126)
" 1
I)"
;
"t
ten
t
ion"
:'::;(1
c:
loSE!:L
H
Y
·
II
ey,
OLl
..
That
sure
got
your
Attention
3-22
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