```

% pandoc -t native -s -M title=New

% Old

^D

Pandoc (Meta {unMeta = fromList [("title",MetaString "New")]})

[]

```

```

% pandoc -t native -s -M foo=1 -M foo=2

^D

Pandoc (Meta {unMeta = fromList [("foo",MetaList [MetaString "1",MetaString "2"])]})

[]

```