In case anyone was interested, here is the template for a 'dummy' script appropriate for injection directly into the resource.001 file:
Header:
64 12 14 00 10 00 00 00
Script body:
07 00 08 00 01 00 0C 00 02 00 06 00 48 00 00 00
The header is the standard 4 two-byte values of id, compression size, decompression size & compression type. The body of this particular script looks like this:
(include "sci.sh")
(script 612)
(procedure public (DummyScript))
For each dummy script, the only thing that changes is the header (just the first 2 bytes - and only the bits corresponding to the resource number). After appending the above hex values into the resource.001 file it is necessary to rebuild the map file.