Elizabeth I dies and James VI of Scotland accedes to the English throne. Elizabeth I died childless so was succeeded by her cousin, James VI of Scotland, who henceforth assumed the title of James I of England as well.
T minus zero means out of time.. This comes from a countdown convention used in by both the American military and NASA. Generally, it is used when counting down to a major event that will happen at a specific time. Mathematically, T is time, minus whatever amount of time is left until the event happens.
-m [ \\ ComputerName ] : Specifies the computer that you want to shut down. -t xx : Sets the timer for system shutdown in xx seconds. The default is 20 seconds. -c  message  : Specifies a message to be displayed in the Message area of the System Shutdown window.