sentences:  In addition to illustrating the layout of a network with representative icons for the hosts and interconnecting lines, each device icon may be explored to produce a popup information box summarizing important network and host parameters, such as MAC address and IP address (both IPv4 and IPv6).Icons are labeled with the hostnames (or first component of their fully qualified domain names), or a representative name of the function of the device, e.g., "gateway".If the device has reported the presence of a management Web interface, clicking on the icon will open a HTTP session to the host.