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Dear Manik,

   I just checked your CIF file on magic 7.2, and it reads in with only
one problem, which is that the substrate and well contacts get eliminated
due to the way magic performs boolean arithmetic on layers and the way the
contacts are set in subcells in the CIF file (it is trivial to redraw
the contacts back in).

   HOWEVER---I don't think the problem you see relates to polygons, and
so is not an issue of what version of magic you're using.  I think it
relates to the fact that the CIF file "adder.cif" does not define any
geometry on the top level of the hierarchy;  its hierarchical setup is
much more like a GDS2 file.  For that reason, I think you'll find that
if you do:

	cif read adder
	load adder

you will discover your missing circuit.

   As an offhand comment, magic version 7.2 compiled with Tcl has a "cell
manager" which shows the hierarchy of cells loaded in memory.  I used
this feature to immediately pinpoint the problem with the CIF file.

					Regards,
					Tim

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