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	CHECK_VECTOR, CHECK_BUFFER, CHECK_WINDOW, CHECK_LIVE_WINDOW,
	CHECK_PROCESS, CHECK_NUMBER, CHECK_NATNUM, CHECK_MARKER,
	CHECK_NUMBER_COERCE_MARKER, CHECK_FLOAT, CHECK_NUMBER_OR_FLOAT,
	CHECK_NUMBER_OR_FLOAT_COERCE_MARKER, CHECK_OVERLAY): Wrap a do
	... while (0) around these compound statements to make them
	syntactically equivalent to a single statement.