Their documentation can be used in the future as a study tool and for language protection efforts,if needed.

VOA: special.2009.12.02

It can be a great educational tool.

VOA: special.2010.04.12

Economists have long considered government spending, especially on infrastructure, to be an effective tool for revitalizing a stagnating economy.

VOA: standard.2009.10.16

They say having a trial so close to where the Twin Towers once stood would be a recruitment and radicalization tool to terrorists.

VOA: standard.2010.01.30