Sentence:  Subject to the limitations hereinafter provided , the Secretary of the Treasury is authorized and directed to pay , as prescribed by section 8 of this Title , an amount not exceeding the principal of each award , plus <WSD>accrued</WSD> interests on such awards as bear interest , certified pursuant to section 5 of this Title , in accordance with the award . 
Meaning of the word marked with <WSD> tags:  grow by addition