Modify Invoice Templates

[Brian C. Huffman]

Derek Atkins wrote:
> 
> Hi,
> 
> "Brian C. Huffman" <bhuffman at graze.net> writes:
> > 
> > Is there any way to modify the wording in the Invoice Templates?  
For 
> > example, Id like Reference to say PO
> 
> Currently invoices (indeed all reports) are generated from scheme
> scripts, not loaded from a template.  To change that string you
> would have to modify the invoice scheme file.  It's not hard to
> make that change, but you'd have to make that change every time
> you upgraded GnuCash.

Where are those scripts located (on Windows)?  I don't mind modifying 
every time if I know where they are.

Thanks!
Brian