EMCEE /BEGIN

        [ADJUST\]EMCEE Data  Command  /BEGIN  [/BOUNDS  Par  Low  Up  [...]]
    [/LENGTH Length] /PARAMETERS Va Vb Vc ...  [/START A1 B1 C1 ...]  [/STEP
    A2 B2 C2 ...]  [/WALKERS NWalk] [/ROOT_NAME Root]

    or

        [ADJUST\]EMCEE /BEGIN  [/LENGTH Length]

      Start a Monte Carlo Markov Chain using the EMCEE  method.   The  short
    form uses parameters defined in a previous EMCEE command.