Data structure field names

Hi,

One of our standards often imposes working with hideous data structure
names as parameters, which gives field name like

GhkrAdlMjr.CstTy for the customer type.

I'd like to be able to declare a local DS something like :

D wDS DS
D wCstTy
D wfld2
D etc.

which would have the same structure as GhkrAdlMjr. Then write :

wDS = GhkrAdlMjr;

And be able to refer to the customer type as wCstTy instead of
GhkrAdlMjr.CstTy throughout the procedure.

How can I do this? If I declare my wDS like the horribly named DS, my field
names will be wDS.wCstTy, etc.

Thanks.