Defines the type of point distribution to be used in the next part of the brick mesh generation.
Currently, the only type of point distribution allowed is rzst. Currently, the only command that sets up a brick mesh is regnpts, and the region used in the regnpts command must include the boundaries of the region. The bricktyp variable must be set before regnpts is used if a brick mesh is desired. After all the regnpts commands have been processed, the commands, filter, setpts, mass, and matchbdy, must be placed in that order somewhere in the input file. The search command should not be used if a brick mesh is being set up.