D:\daten\perl>perl Hello_World.pl
Hello World!

D:\daten\perl>pp Hello_World.pl
D:\daten\perl>a.exe
No diagnostics? at D:/Perl/lib/diagnostics.pm line 397.
Compilation failed in require at script/Hello_World.pl line 4.
BEGIN failed--compilation aborted at script/Hello_World.pl line 4.