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PSCRLF:
This is the character string, normally carriage return, line feed,
sent to advance
~
non-daisy printer to the beginning of the next line.
The
characters in the string may be altered as required by unusual printers; the
count may be increased to send nulls (zeroes) (up to a total of 10 characters)
after the character string is sent if the printer requires a delay while the
carriage returns and the paper advances.
PSCR:
This is the character string, normally carriage return only, used to
return the carriage of a non-daisy printer to the beginning of the same line.
This string is used to permit overprinting for underline, boldface, etc. if
POSMTH (above) is FF hex; it is also used whenever a carriage return without
a line feed is encountered in the document, if POSMTH is FF or O.
PBACKS:
This is the character string, normally an ASCII "backspace"
character, used to backspace a non-daisy printer. This string is transmitted if
POSMTH (above) is zero in order to permit printing a character in the same
position as the preceding character for underline, boldface, backspace, etc.
Note that if POSMTH is not zero this string is never transmitted and thus the
printer need not be capable of backspacing.
PSHALF (Optional):
This is a character string to return the carriage and
advance the paper one-half line, for non-daisy printers with this capability but
without the capability of advancing the paper backwards a fractional line (see
also ROLUP and ROLDOW below).
If
installed, the half-line advance will be
used to printer subscripts and superscripts one-half line below or above,
respectively, the rest of the line.
Example:
If
the printer advances one-half line for each line feed code sent,
install the sequence "carriage return, line feed" at PSHALF and the sequence
"carriage return, line feed, line feed" or "carriage return, line feed, carriage
return, line feed" at PSCRLF. Note: The INSTALL Printer Menu selection
"Half-Line-Feed Printers"sets PSHALF and PSCRLF to the foregoing strings;
this selection is otherwise identical to the selection "Teletype-Like Printer
that can BACKSPACE".
ROLUP (Optional): This is a character string to roll the carriage UP (move
the paper down) a fractional line, for non-daisy printers with this capability.
If
ROLUP and ROLDOW are installed, subscripts and superscripts will be
printed by moving the carriage up and down in the course of printing a line.
ROLDOW (Optional):
If
ROLUP (preceding) is installed, then the string to roll
the carriage down (paper up) a fractional line should be installed at ROLDOW.
PALT (Optional):
A string may be installed here to set the printer to an
al ternate character pitch (character width), for non-daisy printers with this
capability.
An alternate pitch print (Control A) in the document will then
invoke transmission of this string.
Note:
Word Processing contains the
necessary logic to restore normal pitch while printing page offsets, headings,
etc., that were specified when normal pitch was in effect.
PSTD (Optional):
If
PAL T (preceding) is installed, then the string to restore
the printer to its normal character pitch should be installed at PSTD.
REFERENCE
13-22
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