Setup neighbor list.
The frequency to build the neighbor list is controlled by the delay, every and check option keywords. The neighbor list is only built at least delay steps after the previous build. Then, every every steps the neighbor list will be built after the delay. If check yes is specified, the program will check the maximum displacement of particles every every steps after the delay from the last build. Only if the maximum displacement is over half of the cut - off + skin, the neighbor list will be rebuilt. If check no is specified, the neighbor list will be rebuilt after the delay, even with every specified.