exprdist:Object of class "expression":
expressions of the cdf and pdf of the copula. These expressions
are used in function 'pcopula' and 'dcopula'.
dimension:Object of class "numeric", dimension
of the copula.
parameters:Object of class "numeric",
parameter values.
param.names:Object of class "character",
parameter names.
param.lowbnd:Object of class "numeric",
parameter lower bounds.
param.upbnd:Object of class "numeric",
parameter upper bounds.
fullname:deprecated; object of class "character", family names
of the copula.