formline picture, variables
Internal function used by formats, although you may
also call it. It formats a
list of values (variables) according to the contents of picture,
output into the format output accumulator,
write is done, the contents of
$^A are written to
some filehandle, but you could also read
$^A back to
"". Note that a format typically does
formline per line of form, but the
itself doesn't care how many newlines are embedded in the picture.
This means that the
~~ tokens will treat the
entire picture as a single line. Thus, you may need to use
multiple formlines to implement a single record-format, like the
Be careful if you put double quotes around the picture, since an
character may be taken to mean the beginning of an array name.
formline always returns true.
See Section 4.10, "Formats" in Chapter 4 for more information.