Quizshow904,
It is STAR wiring because it does not use any wire feeds that are common to more than one block. That is to say that every block has its own pair of (-) and (+) feed power feed wires. This style of wiring is advantageous for the DCS operating system because it minimizes digital signal distortion to Proto Sound locomotives.
Quizshow904,
To add to Bobby Ogage's correct comment; The star is common in electronics, and is the now preferred method for Ethernet wiring at businesses etc. I like to think of the star as looking like an asterisk * sometimes called a star. The central point where the wires tie together is the center of the asterisk, the middle of the star. The far end of each wire is the point of the star/asterisk. I hope this analogy helps.
