Which mask lets you define an object on one layer as a mask for artwork on other layers?

Well i might get reported for putting this out here buutt why do we all have to bow down to a greater being? yes i accept that there is someone higher that keeps most people going but for me its like something to throw to keep one in their what is the purpose of a religion and why do they always throw that if one dosent obide by the lord he will shun them?

Name three skills it takes to be a successful designer

What group of people inspired may of bartoks compositions?