# old structure

my $hash={
	key1=>'comment1',
	key2=>'comment2'
};

# new structure

my $hash={
	key1=>'comment1',
	key2=>'comment2',
	key3=>{
		comment=>'comment3',
		advice=>'advice3'
		},
	key4=>{
		comment=>'comment4',
		advice=>'advice4'
		}
	
};