/usr/share/doc/ruby-opengl/examples/ is in ruby-opengl 0.60.1+dfsg2-1~wheezy1.
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/usr/share/doc/ruby-opengl/examples/OrangeBook/
/usr/share/doc/ruby-opengl/examples/OrangeBook/3Dlabs-License.txt
/usr/share/doc/ruby-opengl/examples/OrangeBook/brick.frag
/usr/share/doc/ruby-opengl/examples/OrangeBook/brick.rb
/usr/share/doc/ruby-opengl/examples/OrangeBook/brick.vert
/usr/share/doc/ruby-opengl/examples/OrangeBook/particle.frag
/usr/share/doc/ruby-opengl/examples/OrangeBook/particle.rb
/usr/share/doc/ruby-opengl/examples/OrangeBook/particle.vert
/usr/share/doc/ruby-opengl/examples/README
/usr/share/doc/ruby-opengl/examples/RedBook/
/usr/share/doc/ruby-opengl/examples/RedBook/aapoly.rb
/usr/share/doc/ruby-opengl/examples/RedBook/aargb.rb
/usr/share/doc/ruby-opengl/examples/RedBook/accanti.rb
/usr/share/doc/ruby-opengl/examples/RedBook/accpersp.rb
/usr/share/doc/ruby-opengl/examples/RedBook/alpha.rb
/usr/share/doc/ruby-opengl/examples/RedBook/alpha3D.rb
/usr/share/doc/ruby-opengl/examples/RedBook/bezcurve.rb
/usr/share/doc/ruby-opengl/examples/RedBook/bezmesh.rb
/usr/share/doc/ruby-opengl/examples/RedBook/checker.rb
/usr/share/doc/ruby-opengl/examples/RedBook/clip.rb
/usr/share/doc/ruby-opengl/examples/RedBook/colormat.rb
/usr/share/doc/ruby-opengl/examples/RedBook/cube.rb
/usr/share/doc/ruby-opengl/examples/RedBook/depthcue.rb
/usr/share/doc/ruby-opengl/examples/RedBook/dof.rb
/usr/share/doc/ruby-opengl/examples/RedBook/double.rb
/usr/share/doc/ruby-opengl/examples/RedBook/drawf.rb
/usr/share/doc/ruby-opengl/examples/RedBook/feedback.rb
/usr/share/doc/ruby-opengl/examples/RedBook/fog.rb
/usr/share/doc/ruby-opengl/examples/RedBook/font.rb
/usr/share/doc/ruby-opengl/examples/RedBook/hello.rb
/usr/share/doc/ruby-opengl/examples/RedBook/image.rb
/usr/share/doc/ruby-opengl/examples/RedBook/jitter.rb
/usr/share/doc/ruby-opengl/examples/RedBook/lines.rb
/usr/share/doc/ruby-opengl/examples/RedBook/list.rb
/usr/share/doc/ruby-opengl/examples/RedBook/material.rb
/usr/share/doc/ruby-opengl/examples/RedBook/mipmap.rb
/usr/share/doc/ruby-opengl/examples/RedBook/model.rb
/usr/share/doc/ruby-opengl/examples/RedBook/movelight.rb
/usr/share/doc/ruby-opengl/examples/RedBook/pickdepth.rb
/usr/share/doc/ruby-opengl/examples/RedBook/planet.rb
/usr/share/doc/ruby-opengl/examples/RedBook/quadric.rb
/usr/share/doc/ruby-opengl/examples/RedBook/robot.rb
/usr/share/doc/ruby-opengl/examples/RedBook/select.rb
/usr/share/doc/ruby-opengl/examples/RedBook/smooth.rb
/usr/share/doc/ruby-opengl/examples/RedBook/stencil.rb
/usr/share/doc/ruby-opengl/examples/RedBook/stroke.rb
/usr/share/doc/ruby-opengl/examples/RedBook/surface.rb
/usr/share/doc/ruby-opengl/examples/RedBook/teaambient.rb
/usr/share/doc/ruby-opengl/examples/RedBook/teapots.rb
/usr/share/doc/ruby-opengl/examples/RedBook/tess.rb
/usr/share/doc/ruby-opengl/examples/RedBook/texbind.rb
/usr/share/doc/ruby-opengl/examples/RedBook/texgen.rb
/usr/share/doc/ruby-opengl/examples/RedBook/texturesurf.rb
/usr/share/doc/ruby-opengl/examples/RedBook/varray.rb
/usr/share/doc/ruby-opengl/examples/RedBook/wrap.rb
/usr/share/doc/ruby-opengl/examples/misc/
/usr/share/doc/ruby-opengl/examples/misc/OGLBench.rb
/usr/share/doc/ruby-opengl/examples/misc/anisotropic.rb
/usr/share/doc/ruby-opengl/examples/misc/font-glut.rb
/usr/share/doc/ruby-opengl/examples/misc/glfwtest.rb
/usr/share/doc/ruby-opengl/examples/misc/plane.rb
/usr/share/doc/ruby-opengl/examples/misc/readpixel.rb
/usr/share/doc/ruby-opengl/examples/misc/sdltest.rb
/usr/share/doc/ruby-opengl/examples/misc/trislam.rb