Is there any way to copy an account sub-hierarchy?

[Douglas Mandell]

Greetings,

I'm setting up GnuCash to manage my rental properties, and each property
has two account sub-hierarchies associated with it, an asset and a cash
flow.  The asset part contains things like the purchase price, mortgage
loans, and unrealized gain, and the cash flow part contains all income,
expenses, and financing costs.  So far, I haven't found any way to build
a template of these sub-hierarchies that I can duplicate and rename; I
have had to create every sub-account manually.  Am I missing something?
 If I'm not missing something, the GnuCash certainly *is*.  It seems to
me that adding this capability would make a good program even better.

Maybe if my rentals do well enough, I'll be able to quit my day job
(programming) and add this feature myself...

--Douglas Mandell