use Library;
select((select(STDOUT), $|=1)[0]);

print STDOUT  "Out  \n";
print STDERR  "   -> Err \n";
print STDOUT  "Out  \n";
print STDERR  "   -> Err \n";
print STDOUT  "Out  \n";
print STDERR  "   -> Err \n";

Library::createProcess('random application');