/usr/share/doc/raster3d/examples/example5.r3d is in raster3d-doc 3.0-3-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 | @example3.r3d
#
# Reset orientation matrix for grasp surface
@ex5_matrix.r3d
#
# Transparent surface
@transparent
#
# auto-uncompression of surface file
@gal_srf.r3d.gz
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