a `list`

with components

Zttranspose of the sparse model matrix for the random effects

thetainitial values of the covariance parameters

Lindan integer vector of indices determining the mapping of
the elements of the `theta`

vector to the `"x"`

slot of
`Lambdat`

Gpa vector indexing the association of
elements of the conditional mode vector
with random-effect terms; if `nb`

is the vector of numbers
of conditional modes per term (i.e. number of groups times number
of effects per group), `Gp`

is `c(0,cumsum(nb))`

(and conversely `nb`

is `diff(Gp)`

)

lowerlower bounds on the covariance parameters

Lambdattranspose of the sparse relative covariance factor

flistlist of grouping factors used in the
random-effects terms

cnmsa list of column names
of the random effects according to the grouping factors

Ztlistlist of components of the transpose of the
random-effects model matrix, separated by random-effects term