Legal drinking age. The legal drinking age is the age at which a person can legally consume or purchase alcoholic beverages. These laws cover a wide range of issues and behaviors, addressing when and where alcohol can be consumed.
An open system is a system that has external interactions. Such interactions can take the form of information, energy, or material transfers into or out of the system boundary, depending on the discipline which defines the concept.
Open Enterprise Server (OES) is a server operating system designed for shared network resources and a virtualization computing environment. Open enterprise server, a product of Novell, is a combination of Netware and Suse Linux enterprise server and can be installed like any of the two depending upon the installation.