WAN (Wide Area Network), is a computer network that joins several local networks, although their members are not all in the same physical location.
LAN (Local Area Network) is a network of computers that cover in a small area for example a house, an apartment or a building. One part of the topological definition is the physical topology, which is the actual arrangement of the cables or media.
MAN (metropolitan area network) is a network of computers that interconnects users with computer resources in a geographic area or region larger than area covered by a large local area network (LAN)
PAN (Personal Area Network.) Is a network used to connect different personal computer devices centered on an individual person workspace.
tput is a command for command line environments in Linux distributions. tput can be used to manipulate color, text color, move the cursor and generally make the command line environment alot more readable and appealing to humans. The tput cup 10 15 is used to move the cursor 10 rows down and 15 characters right in the terminal