import
import - patch a module's namespace into your own
import
There is no built-in 
import()
 function.  It is merely an ordinary
method (subroutine) defined (or inherited) by modules that wish to export
names to another module.  The 
use()
 function calls the 
import()
 method
for the package used.  See also 
use
, 
the perlmod manpage
, and Exporter.