my $mungable =  Munge->new( file=>'data' );

my $sorted   = $mungable->sort( by=>size );

my $mangled  = $mungable->mangle();

my $subset_of_mangled = $mangled->subset( some=>'criteria' );
my $subset_of_sorted  = $sorted->subset( some=>'criteria' );
my $subset_of_orig    = $mungable->subset( some=>'criteria' );