Pandoc (Meta {unMeta = fromList [("Company",MetaInlines [Str "My",Space,Str "Company"]),("Second Custom Property",MetaInlines [Str "Second",Space,Str "custom",Space,Str "property",Space,Str "value"]),("abstract",MetaBlocks [Plain [Str "Quite",Space,Str "a",Space,Str "long",Space,Str "description",SoftBreak,Str "spanning",Space,Str "several",Space,Str "lines"]]),("author",MetaList [MetaInlines [Str "A.",Space,Str "M."]]),("category",MetaInlines [Str "My",Space,Str "Category"]),("custom1",MetaInlines [Str "First",Space,Str "custom",Space,Str "property",Space,Str "value"]),("custom3",MetaInlines [Str "Escaping",Space,Str "amp",Space,Str "&",Space,Str "."]),("custom4",MetaInlines [Str "Escaping",Space,Str "LT,GT",Space,Str "<",Space,Str "asdf",Space,Str ">",Space,Str "<"]),("custom5",MetaInlines [Str "Escaping",Space,Str "html",Space,RawInline (Format "html") "",Str "asdf",RawInline (Format "html") ""]),("custom6",MetaInlines [Str "Escaping",Space,Emph [Str "MD"],Space,Str "\225",Space,Str "a"]),("custom9",MetaInlines [Str "Extended",Space,Str "chars:",Space,Str "\8364",Space,Str "\225",Space,Str "\233",Space,Str "\237",Space,Str "\243",Space,Str "\250",Space,Str "$"]),("description",MetaBlocks [Para [Str "Long",Space,Str "description",Space,Str "spanning",SoftBreak,Str "several",Space,Str "lines."],Plain [Str "This",Space,Str "is",Space,Str "\225",Space,Str "second",Space,RawInline (Format "html") "",Str "line",RawInline (Format "html") "",Str "."]]),("keywords",MetaList [MetaInlines [Str "keyword",Space,Str "1"],MetaInlines [Str "keyword",Space,Str "2"]]),("lang",MetaInlines [Str "en-US"]),("nested-custom",MetaList [MetaMap (fromList [("custom 7",MetaInlines [Str "Nested",Space,Str "Custom",Space,Str "value",Space,Str "7"])]),MetaMap (fromList [("custom 8",MetaInlines [Str "Nested",Space,Str "Custom",Space,Str "value",Space,Str "8"])])]),("subject",MetaInlines [Str "This",Space,Str "is",Space,Str "the",Space,Str "subject"]),("subtitle",MetaInlines [Str "This",Space,Str "is",Space,Str "a",Space,Str "subtitle"]),("title",MetaInlines [Str "Testing",Space,Str "custom",Space,Str "properties"])]}) [Para [Str "Testing",Space,Str "document",Space,Str "properties"]]