Documentation

`localpart(d::DArray) obtains the locally-stored portion of a DArray.`

Somehow if I'm new to DArrays I don't find this helpful.
I try
`localpart(A)`
and I get
`0-element Array{Float64,1}`

Can the doc recommend
`fetch(@spawnat 2 localpart(A))`
an an example of seeing the localpart(A)
and give a few more examples with
spawns, fetches, and remotecall_fetch ?

Find the documentation entry for localpart(d::DArray), which the issue identifies as the target. Review how DArray documentation presents remote execution, then update the explanation with the requested spawnat, fetch, and remotecall_fetch examples; done means a newcomer can see how to inspect a local part rather than receiving an unexplained empty array.

Written by the indexing model from the issue text.