Click an icon in the tree view on the left, or double-click an icon (when in icon view) or table entry (when in detail view) on the right to display the selected item's contents.
The specific commands available on the Computer/Networks Action and View menus vary depending on whether a computer, network, or subnetwork is currently selected.
Networks are represented as containers in which subnetworks and computers are displayed. The various Computers containers display all computers in the selected network or subnetwork.
The topmost Computers icon in the tree view on the left displays all computers in the current management domain (single server or name service).
See More About Containers for more information about how computers and networks are represented in the Computers/Networks tool.