NAME
asa — interpret ASA carriage control characters
DESCRIPTION
asa
interprets the output of FORTRAN programs that utilize ASA
carriage control characters.
It processes either the
files
whose names are given as arguments,
or the standard input if
-
is specified or if no file names are given.
The first character of each line is assumed to be a control character.
The following control characters are interpreted as indicated:
- (blank)
Output a single new-line character before printing.
- (space)
(UNIX Standard only, see
standards(5))
The rest of the line will be output without change.
- 0
A <newline> shall be output, then the rest of
the input line.
- 1
Output a new-page character before printing.
- +
Overprint previous line.
- +
(UNIX Standard only, see
standards(5))
The <newline> of the previous line shall be replaced with
one or more implementation-defined characters that causes
printing to return to column position 1, followed by the
rest of the input line. If the + is the first character in
the input, it shall have the same effect as
<space>.
Lines beginning with other than the above characters
are treated the same as lines beginning with a blank.
The first character of a line is
not
printed.
If any such lines appear,
an appropriate diagnostic is sent to standard error.
This program forces the first line of each input file
to start on a new page.
(UNIX Standard only, see
standards(5))
The action of the asa utility is unspecified upon encountering
any character other than those listed above as the first character
in a line.
To view the output of FORTRAN programs which use ASA
carriage control characters and have them appear in normal form,
asa
can be used as a filter:
The output, properly formatted and paginated,
is then directed to the line printer.
FORTRAN output previously sent to a file
can be viewed on a user terminal screen by using:
EXTERNAL INFLUENCES
For information about the UNIX standard environment, see
standards(5).
Environment Variables
LC_CTYPE
determines the interpretation of text within file
as single- and/or multi-byte characters.
LC_MESSAGES
determines the language in which messages are displayed.
If
LC_CTYPE
or
LC_MESSAGES
is not specified in the environment or is set to
the empty string, the value of
LANG
is used as a default for each
unspecified or empty variable.
If
LANG
is not specified or is set to the empty string, a default of "C" (see
lang(5))
is used instead of
LANG.
If any internationalization variable contains an invalid setting,
asa
behaves as if all internationalization variables are set to "C".
See
environ(5).
International Code Set Support
Single- and multi-byte character code sets are supported.
STANDARDS CONFORMANCE
asa: XPG4, POSIX.2
Printable version
