A.invert({1:"a", 2:"A"})
; => {"a":2}

NormalLabel:
; do something
return
	TabbedLabel:
	; do something
	return
Sus{}//[]Label:
; do something
return

----------------------------------------------------

[
	"A",
	["operator", "."],
	["function", "invert"],
	["punctuation", "("],
	["punctuation", "{"],
	["number", "1"],
	["punctuation", ":"],
	["string", "\"a\""],
	["punctuation", ","],
	["number", "2"],
	["punctuation", ":"],
	["string", "\"A\""],
	["punctuation", "}"],
	["punctuation", ")"],

	["comment", "; => {\"a\":2}"],

	["tag", "NormalLabel"], ["punctuation", ":"],
	["comment", "; do something"],
	["command", "return"],
	["tag", "TabbedLabel"], ["punctuation", ":"],
	["comment", "; do something"],
	["command", "return"],
	["tag", "Sus{}//[]Label"], ["punctuation", ":"],
	["comment", "; do something"],
	["command", "return"]
]
