[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.