IBM 3742 Reference Manual page 70

Local Format Control
With local format control, the operator loads the printer
format programs into the program level buffers just as key
entry programs are loaded. Up to nine formats can be
loaded at one time (program levels 1 through 9). One other
program level (A) is reserved for horizontal and vertical
forms control and the printer format program selector
character.
Program Level A: The character in position 1 of program
level A defines the method of selecting the printer format
program. Figure 33 summarizes the effect of position 1 on
printer format program selections
Character in Position 1
of Program Level A
:
%
: with program
level
a
selected
% with position
001 of the data
record containing
a zero or a non-
numeric character
+
All other
characters
Meaning
Printer format program b
manually selected.
Printer format program level
is defined by the character
in position 001 of each data
record.
Records are printed one
record per line with no
format control.
Record is printed with no
format.
Pri nti ng formatted by
control characters in data
stream. See following
section on CPU Format
Control.
Records are printed one
record per line with no
format control.
Figure 33. Printer Format Program Selection
64
The characters in positions 2 through 128 specify tab stop
positions and VFC (vertical forms control) "skip to" posi-
tions. Thus, it's possible to format printer forms up to 128
print positions wide and 128 print lines long. Since the
VFC characters are superimposed over the horizontal tab
stop characters in program level A, additional characters
representing both a tab stop position and VFC position are
necessary. Figure 34 lists the characters defined for this
purpose. Figure 35 shows an example of horizontal tab and
VFC character superimposition. The line 16 "skip to 2"
character combined with the position 16 tab character
requires a K in position 16 of program level A.
No Tab_ .Jl'litlLTalL
Character Character
No VFC character (blank)
T
Skip to initial position on
form set 1
J
Skip to 2 2 K
Skip to 3 3 L
Skip to 4 4
M
Skip to 5 5 N
Skip to 6 6 0
Skip to 7 7 P
Skip
ta8 8 Q
Skip to 9
9 R
End of form* E F
*Character is inserted in the position that is one greater
than the number of available print lines per form; that
is, if form is 10" long (60 print lines per form), the E
or F is inserted in position 61.
Figure 34. Program Level A: Horizontal Tab and Vertical
Forms Control Characters
(