> That is, the fwd anno file would represent a delta between the
> existing .pcb file and what's changed in the .sch files.

I'm looking at it a step further away - the fwd anno file includes all
the info about the pcb *that comes from the schematic*.  PCB will
integrate this "desired" list with the board's "actual" list and
update it accordingly.

I don't want the netlister to *ever* have to read the pcb file to find
out what's already in there.  I prefer to draw the line between
"things that need to know about the schematic format" and "things that
need to know about the pcb format".

> This implies that gsch2pcb must be able to read and parse a .pcb
> file,

I'd rather avoid this, and I don't think it's needed anyway.


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