Email addresses E.g.
On ruby, the User ID is usually the first four letters of your last name and the first letter of your first name. The principal email server at SILS is ruby, so ruby.ils.unc.edu refers to the same computer as ils.unc.edu. The parts of the domain, called subdomains , are separated by periods. Note that the subdomains refer to progressively larger entities going from left to right. Pine Menu Interface Keyboard Driven - Can't Use Mouse 3.