$,mrgmod-method: Select parameter values from a model object
Description
The $ and [[ operators get the value 
of a single parameter in the model.  The 
[ gets several values, returning a 
named list.
Usage
# S4 method for mrgmod
$(x, name)# S4 method for mrgmod
[[(x, i, exact = TRUE)
# S4 method for mrgmod
[(x, i)