Writes a formatted record (possibly multi-line) to the specified FILEHANDLE, using the
format associated with that file. By default the format for a file is the one having the
same name as the filehandle, but the format for the current output channel (see the select
function) may be set explicitly by assigning the name of the format to the $~
variable.
Top of form processing is handled automatically: if there is insufficient room on the
current page for the formatted record, the page is advanced by writing a form feed, a
special top-of-page format is used to format the new page header, and then the record is
written. By default the top-of-page format is the name of the filehandle with
"_TOP" appended, but it may be dynamically set to the format of your choice by
assigning the name to the $^ variable while the filehandle is selected. The
number of lines remaining on the current page is in variable $-, which can be
set to 0 to force a new page.
If FILEHANDLE is unspecified, output goes to the current default output channel, which
starts out as STDOUT but may be changed by the select operator. If the
FILEHANDLE is an EXPR, then the expression is evaluated and the resulting string is used
to look up the name of the FILEHANDLE at run time. For more on formats, see perlform.
Note that write is not the opposite of read. Unfortunately.
