how does file gets send to remote machine using perl

Hi,

Someone wrote a perl script which manipulate a file and sent to number 
of remote system.
I ported that exact script to my local machine but I don't see anything 
going out.
Peeking into the script, I see no special module being used and no 
ftp/sftp/scp or anything like that being used.

Does perl have the ability to transfer file?
I guess I need to understand networking in general when it comes to 
programming(i have no idea).

Any idea or pointer would be greatly appreciated.

thanks.(cannot cp and paste work script here since it's company's policy)