PRIOR
_REGRESSORS |parameter-list ~ distribution ;
The PRIOR statement specifies the prior distribution of the model parameters. You must specify a single parameter or a list of parameter, a tilde ~, and then a distribution with its parameters. Multiple PRIOR statements are allowed.
You can specify the following distributions:
See the section Standard Distributions for details about how to specify distributions.
You can specify the special keyword REGRESSORS to select all the parameters used in the linear regression component of the model.