Specifications

6-25
System V Printer Configuration
Line pitch
LPI scaled–decimal 6
Page length LENGTH scaled–decimal 66
Page width WIDTH scaled–decimal 80
Pages to print PAGES page–list 1–5,13–20
Character set CHARSE
T
character–set finnish
Form name FORM form–name invoice2
Number of copies COPIES integer 3
Special modes MODES mode landscape
To find out which values to supply for each type of template (that is, for the pattern and
replacement arguments for each keyword), consider the following:
• The values for the INPUT and OUTPUT templates come from the file type that needs to
be converted by the filter and the output type that has to be produced by the filter,
respectively. They will each be a type registered with the filter.
• The value for the TERM template is the printer type.
• The value for the PRINTER template is the name of the printer that will print the final
output.
• The values for the CPI, LPI, LENGTH, and WIDTH templates come from the user
request, the form being used, or the default values for the printer.
• The value for the PAGES template is a list of pages to be printed. Typically, it is a
comma–separated list of page ranges, each of which consists of a dash–separated pair
of numbers or a single number (such as 1–6,8,10 for pages 1 through 6, 8, and 10).
However, whatever value was given in the –P option to a print request is passed
unchanged.
• The value for the CHARSET template is the name of the character set to be used.
• The value for the FORM template is the name of the form requested by the –f option of
the lp command.
• The value of the COPIES template determines the number of copies made of the file. If
the filter uses this template, the print service will reduce to 1 the number of copies of the
filtered file it will have printed, because this single copy will really be the multiple copies
produced by the filter.
• The value of the MODES template comes from the –y option of the lp command (the
command used to submit a print request). Because a user can specify several –y
options, there may be several values for the MODES template. The values will be
applied in the left–to–right order given by the user.
The replacement part of a template shows how the value of a template is given to the filter
program. It is typically a literal option, sometimes with the place–holder * (asterisk) included
to show where the value goes. The pattern and replacement can also use the regular
expression syntax of the ed command for more complex conversion of user input options
into filter options. All of the regular expression syntax of the ed command is supported,
including the \(. . . \) and \n constructions, which can be used to extract portions of the
pattern for copying into the replacement, and the &, which can be used to copy the entire
pattern into the replacement.
Note: If a comma or an equal sign (=) is included in a pattern or a replacement, escape
its special meaning by preceding it with a backslash (\). Note that some regular
expressions include commas that will have to be escaped this way. A backslash in front
of any of these characters is removed when the pattern or replacement is used.
The following examples show how this works.