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dynamic page break display will accurately show the printout page breaks on-
screen while editing.
Changing Line Height:
On
daisy
wheel printers, the line height may be
specified
in 48ths of an inch with the .LH command. For example, to print 8
lines per inch instead of the usual 6, use the command:
.LH 6
When the line height is changed on a daisy-wheel printer, margins and paper
length are not affected. They remain the same in inches, regardless of the
line size. However, subsequent .PL, .MT, .MB, .HM, and .FM commands are
interpreted (converted to inches) in terms of the new line height.
Thus, if you use the .LH command, carefully consider the order in which .LH
and other vertical format commands are given. For example, .LH 6 followed
by .MT 4 yields a 1/2 inch top margin (4 lines of 6/48 each), whereas .MT 4
followed by .LH 6
yields
a top margin of 2/3 inch, because the .MT command,
appearing first, is interpreted using the standard line height of 8/48 of an inch.
The print function will handle as many changes of line height as you wish, but
for dynamic page break display to work, you must set the line height only at
the beginning of the file.
Hint:
To achieve varying line heights without interfering with the dynamic
pagination, set the line height to 4 (one-half of normal) at the beginning of the
file, then use double-spaced text for close-spaced printout, and triple or
quadruple spaced text for wider line spacing. The CTRL
&
4
+
L command,
can be used to cause automatic double, triple, etc. spacing as text is entered
or reformatted.
Changing the Character Pitch: The width of each character printed (how far
the print head moves between characters) can
be
varied in two ways: with the
CTRL
&
5
+
Nand CTRL
&
5
+
A print control characters, which may be
imbedded mid-line to allow switching between two character widths, and (on a
daisy wheel printer) with the .CW command, which allows setting any
character width, but only between lines.
These can interact, as will be
described shortly.
When a page offset (.PO), page number column (.PC), heading (.HE), or footing
(.FO) is specified, it is interpreted in the current character pitch; subsequent
pitch changes do not alter the page offset, page number position, or the
character spacing in previously specified page headings or footings.
Pitch Changing on a Daisy Wheel Printer is accomplished with the CTRL & 5
+
Nand CTRL
&
5
+
A print command and/or the .CW command:
Control
&
5
+
A
Selects other (alternate) pitch, which
is
12 characters per
inch.
Control
&
5
+
N
Selects normal (standard) pitch, which is 10 characters per
inch.
OTHER FEATURES
12-14
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