SGI lighting model?

[Richard Rosenthal]

<This package filled by volume not weight.>

I tried to compile and load the provided code on 4D/60T ...

/usr/bin/ld:
Undefined:
lsetdepth
czclear
bgnpolygon
n3f
v3f
endpolygon
*** Error code 1

Stop.
$

Oh, well ...
-- 
Richard Rosenthal                 Internet:  richr at ai.etl.army.mil
Engineer Topographic Labs             UUCP:  ...!ames!ai.etl.army.mil!richr
Ft. Belvoir, VA 22060-5546          BITNET:  richr%ai.etl.army.mil at CUNYVM
+1 202 355 2830                      CSNET:  richr%ai.etl.army.mil at RELAY.CS.NET