Chapter 2Extensions to LabVIEWLabVIEW LEGO MINDSTORMS NXT Module2-22ni.comFor UPDATE_RESET_BLOCK_COUNT, block-relative refers to the way this flag is used in the LEGO MINDSTORMS NXT software. By convention, this flag is set every time an NXT-G motor control block starts execution. This convention means that the BlockTachoCount property always provides a position measurement relative to the last NXT-G motor control block to execute. The VIs included with the module follow the same convention, but you do not need to follow this convention.For UPDATE_RESET_ROTATION_COUNT, program-relative refers to the fact that this position counter is reset automatically at the beginning of every program. Set UPDATE_RESET_ROTATION_COUNT to reset this counter manually during program execution.