Class definitions and Business Rules. These tools allow sites to set up a system that defines</font> <font style="font-size: 10pt;" size="2" color="#010100">w</font><font style="font-size: 10pt;" size="2" color="#010100">ho is qualified to do what to which kinds of documents. ASU is expected to be enhanced so that it can replace security keys. it will let a facility control most roles and responsibilities at a hospital as far as ordering, signing, editing, etc. through bu</font><font style="font-size: 10pt;