IDL Tokens:

Grouping: ( ) [ ] { }
Separators: : :: ;
Operators: % & * + , - / < << = > >> ^ | ~

Keywords:
    CORBA 2.2 or earlier:
	any
	attribute
	boolean
	case
	char
	const
	context
	default
	double
	enum
	exception
	FALSE
	float
	in
	inout
	interface
	long
	module
	Object
	octet
	oneway
	out
	raises
	readonly
	sequence
	short
	string
	struct
	switch
	TRUE
	typedef
	unsigned
	union
	void
	wchar
	wstring

    CORBA 2.3 only:
	init	(replaced by factory)

    CORBA 2.3 and 2.4rtf:
	abstract
	custom
	private
	public
	truncatable
	ValueBase
	valuetype
	factory

    CORBA 2.3, not supported by IBM compiler
	native
	fixed

    CORBA 3.0:
	component
	consumes
	emits
	finder
	getRaises
	home
	import
	local
	manages
	multiple
	primaryKey
	provides
	publishes
	setRaises
	supports
	typeId
	typePrefix
	uses