The
asa utility reads files sequentially, mapping FORTRAN carriage-control characters to line-printer control sequences, and writes them to the standard output.
The first character of each line is interpreted as a carriage-control character. The following characters are interpreted as follows:
<space>
Output the rest of the line without change.
0
Output a <newline> character before printing the rest of the line.
1
Output a <formfeed> character before printing the rest of the line.
+
The trailing <newline> of the previous line is replaced by a <carriage-return> before printing the rest of the line.
Lines beginning with characters other than the above are treated as if they begin with <space>.