Syntax: RnW(location, scale, shape, stream)
The random walk distribution (continuous) could be used to model the time required to perform some task. Parameter restrictions are scale > 0.0 and shape > 0.0.
Stream allows you to specify the random number stream for the distribution. There are 215 streams. Stream 1 is the default. See Seeds or Appendix D of the User's Guide for more information.