Getting distinct objects to superimpose properly

[slevy]

You need to turn Normalization off.  Either put "(normalization world none)"
in your ~/.geomview file, or see the browser on the Obscure panel,
or type "0N"  (zero capital-N) in a graphics window.

With normalization on, objects are (independently) scaled & translated to
each fit in the unit sphere, centered on the origin.  This is handy for
ensuring that they'll be easy to manipulate, but wrecks things if you expect
them all to live in a common coordinate system.