New feature:

	Gold/control_a - Adjust balance. Select a range that starts with one
		of "({[< or ends with one of ")}]> and type Gold/control_a.
		TPU will adjust the range adding the appropriate number of
		opening or closing characters to the beginning or the end
		of the range respectively. Double quotes are balanced by
		forcing there to be an even number of them in the range with
		additional characters placed at the end unless the first
		character in the range is NOT a double quote in which case
		the extra character will be placed at the beginning.
		The cursor will be left at the end of the range and select
		will be reset. THE PASTE BUFFER IS USED AS TEMPORARY STORAGE,
		ITS CONTENTS WILL BE LOST.