A fund plan may provide for: The amortization of premiums on bonds or other obligations; The disposition of discounts, profits, stock rights, stock dividends, and extraordinary dividends; The allocation or apportionment between principal or income of the items specified in item (2) of this subsection; and Any other similar matters. To the extent that a fund plan does not provide otherwise as to the determination, allocation, and apportionment of principal and income, the principles of Titles 14 and 14.5 of the Estates and Trusts Article apply.