[Rd] Should there be a confint.mlm ?

[Benjamin Tyner]

> BTW --- and this is a diversion ---  This is nice mathematically
>      (and used in other places, also in "base R" I think)
> but in principle is a waste:  Computing a full
> k x k matrix and then throwing away all but the length-k
> diagonal ...
> In the past I had contemplated but never RFC'ed or really
> implemented a stderr() generic with default method
>
>     stderr.default <- function(object) sqrt(diag(vcov(object)))
>
> but allow non-default methods to be smarter and hence more efficient.
>
A fine idea for sure, but perhaps use a different name in order to avoid 
conflicts with:

 > base::stderr
function ()
.Internal(stderr())
<bytecode: 0x32e1e98>
<environment: namespace:base>