Hello Zenzizenzizenzic,

Just to add something minor here that maybe it will help you to understand a bit more EOF. The actual string EOF it is an indication string that helps you to understand that is the end of your file.

You can define anything as a name e.g. (example of code taken from fellow Monk code haukex):

#!/usr/bin/perl
use strict;
use warnings;
use Data::Dump;

my @sqltt = <<THANOS;
Hello,
World!
THANOS
dd @sqltt;

__END__

$ perl test.pl 
"Hello,\nWorld!\n"
[download]

Hope this minor part helps you understand more about EOF. In generally I prefer reading files line by line, but this is me.

BR / Thanos