// case-sensitive
[
'a',
'A',
]
[
a,
A,
]
embedded_documents::[
// system symbols for Ion 1.0 (with known text)
"$1",
"$2",
"$3",
"$4",
"$5",
"$6",
"$7",
"$8",
"$9",
]
[
null.symbol, // null symbol value
'null.symbol', // symbol with 'null.symbol' as text
]
[
$4, // Refers to SID 4, which is the system symbol with the text "name".
'$4' // A symbol value with text "$4".
]